aboutsummaryrefslogtreecommitdiff
path: root/scripts
AgeCommit message (Collapse)Author
2016-03-22Clean up includes some moreMarkus Armbruster
Manually drop redundant includes that scripts/clean-includes misses, e.g. because they're hidden in generator programs, or they use the wrong kind of delimiter. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22include/qemu/osdep.h: Don't include qapi/error.hMarkus Armbruster
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the Error typedef. Since then, we've moved to include qemu/osdep.h everywhere. Its file comment explains: "To avoid getting into possible circular include dependencies, this file should not include any other QEMU headers, with the exceptions of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which are doing a similar job to this file and are under similar constraints." qapi/error.h doesn't do a similar job, and it doesn't adhere to similar constraints: it includes qapi-types.h. That's in excess of 100KiB of crap most .c files don't actually need. Add the typedef to qemu/typedefs.h, and include that instead of qapi/error.h. Include qapi/error.h in .c files that need it and don't get it now. Include qapi-types.h in qom/object.h for uint16List. Update scripts/clean-includes accordingly. Update it further to match reality: replace config.h by config-target.h, add sysemu/os-posix.h, sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h comment quoted above similarly. This reduces the number of objects depending on qapi/error.h from "all of them" to less than a third. Unfortunately, the number depending on qapi-types.h shrinks only a little. More work is needed for that one. Signed-off-by: Markus Armbruster <armbru@redhat.com> [Fix compilation without the spice devel packages. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-18qapi: Use anonymous bases in QMP flat unionsEric Blake
Now that the generator supports it, we might as well use an anonymous base rather than breaking out a single-use Base structure, for all three of our current QMP flat unions. Oddly enough, this change does not affect the resulting introspection output (because we already inline the members of a base type into an object, and had no independent use of the base type reachable from a command). The case_whitelist now has to list the name of an implicit type; which is not too bad (consider it a feature if it makes it harder for developers to make the whitelist grow :) Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-16-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Allow anonymous base for flat unionEric Blake
Rather than requiring all flat unions to explicitly create a separate base struct, we can allow the qapi schema to specify the common members via an inline dictionary. This is similar to how commands can specify an inline anonymous type for its 'data'. We already have several struct types that only exist to serve as a single flat union's base; the next commit will clean them up. In particular, this patch's change to the BlockdevOptions example in qapi-code-gen.txt will actually be done in the real QAPI schema. Now that anonymous bases are legal, we need to rework the flat-union-bad-base negative test (as previously written, it forms what is now valid QAPI; tweak it to now provide coverage of a new error message path), and add a positive test in qapi-schema-test to use an anonymous base (making the integer argument optional, for even more coverage). Note that this patch only allows anonymous bases for flat unions; simple unions are already enough syntactic sugar that we do not want to burden them further. Meanwhile, while it would be easy to also allow an anonymous base for structs, that would be quite redundant, as the members can be put right into the struct instead. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-15-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Don't special-case simple union wrappersEric Blake
Simple unions were carrying a special case that hid their 'data' QMP member from the resulting C struct, via the hack method QAPISchemaObjectTypeVariant.simple_union_type(). But by using the work we started by unboxing flat union and alternate branches, coupled with the ability to visit the members of an implicit type, we can now expose the simple union's implicit type in qapi-types.h: | struct q_obj_ImageInfoSpecificQCow2_wrapper { | ImageInfoSpecificQCow2 *data; | }; | | struct q_obj_ImageInfoSpecificVmdk_wrapper { | ImageInfoSpecificVmdk *data; | }; ... | struct ImageInfoSpecific { | ImageInfoSpecificKind type; | union { /* union tag is @type */ | void *data; |- ImageInfoSpecificQCow2 *qcow2; |- ImageInfoSpecificVmdk *vmdk; |+ q_obj_ImageInfoSpecificQCow2_wrapper qcow2; |+ q_obj_ImageInfoSpecificVmdk_wrapper vmdk; | } u; | }; Doing this removes asymmetry between QAPI's QMP side and its C side (both sides now expose 'data'), and means that the treatment of a simple union as sugar for a flat union is now equivalent in both languages (previously the two approaches used a different layer of dereferencing, where the simple union could be converted to a flat union with equivalent C layout but different {} on the wire, or to an equivalent QMP wire form but with different C representation). Using the implicit type also lets us get rid of the simple_union_type() hack. Of course, now all clients of simple unions have to adjust from using su->u.member to using su->u.member.data; while this touches a number of files in the tree, some earlier cleanup patches helped minimize the change to the initialization of a temporary variable rather than every single member access. The generated qapi-visit.c code is also affected by the layout change: |@@ -7393,10 +7393,10 @@ void visit_type_ImageInfoSpecific_member | } | switch (obj->type) { | case IMAGE_INFO_SPECIFIC_KIND_QCOW2: |- visit_type_ImageInfoSpecificQCow2(v, "data", &obj->u.qcow2, &err); |+ visit_type_q_obj_ImageInfoSpecificQCow2_wrapper_members(v, &obj->u.qcow2, &err); | break; | case IMAGE_INFO_SPECIFIC_KIND_VMDK: |- visit_type_ImageInfoSpecificVmdk(v, "data", &obj->u.vmdk, &err); |+ visit_type_q_obj_ImageInfoSpecificVmdk_wrapper_members(v, &obj->u.vmdk, &err); | break; | default: | abort(); Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-13-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Drop unused c_null()Eric Blake
Now that we are always bulk-initializing a QAPI C struct to 0 (whether by g_malloc0() or by 'Type arg = {0};'), we no longer have any clients of c_null() in the generator for per-element initialization. This patch is easy enough to revert if we find a use in the future, but in the present, get rid of the dead code. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-12-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Inline gen_visit_members() into lone callerEric Blake
Commit 82ca8e46 noticed that we had multiple implementations of visiting every member of a struct, and consolidated it into gen_visit_fields() (now gen_visit_members()) with enough parameters to cater to slight differences between the clients. But recent exposure of implicit types has meant that we are now down to a single use of that method, so we can clean up the unused conditionals and just inline it into the remaining caller: gen_visit_object_members(). Likewise, gen_err_check() no longer needs optional parameters, as the lone use of non-defaults was via gen_visit_members(). No change to generated code. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-11-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi-commands: Inline single-use helpers of gen_marshal()Eric Blake
Originally, gen_marshal_input_visit() (or gen_visitor_input_block() before commit f1538019) was factored out to make it easy to do two passes of a visit to each member of a (possibly-implicit) object, without duplicating lots of code. But after recent changes, those visits now occupy a single line of emitted code, and the helper method has become a series of conditionals both before and after the one important line, making it rather awkward to see at a glance what gets emitted on the first (parsing) or second (deallocation) pass. It's a lot easier to read the generator code if we just inline both uses directly into gen_marshal(), without all the conditionals. Once we've done that, it's easy to notice that gen_marshal_vars() is used only once, and inlining it too lets us consolidate some mcgen() calls that used to be split across helpers. gen_call() remains a single-use helper function, but it has enough indentation and complexity that inlining it would hamper legibility. No change to generated output. The fact that the diffstat shows a net reduction in lines is an argument in favor of this cleanup. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-10-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi-commands: Utilize implicit struct visitsEric Blake
Rather than generate inline per-member visits, take advantage of the 'visit_type_FOO_members()' function for command marshalling. This is possible now that implicit structs can be visited like any other. Generate call arguments from a stack- allocated struct, rather than a list of local variables: |@@ -57,26 +57,15 @@ void qmp_marshal_add_fd(QDict *args, QOb | QmpInputVisitor *qiv = qmp_input_visitor_new_strict(QOBJECT(args)); | QapiDeallocVisitor *qdv; | Visitor *v; |- bool has_fdset_id = false; |- int64_t fdset_id = 0; |- bool has_opaque = false; |- char *opaque = NULL; |+ q_obj_add_fd_arg arg = {0}; | | v = qmp_input_get_visitor(qiv); |- if (visit_optional(v, "fdset-id", &has_fdset_id)) { |- visit_type_int(v, "fdset-id", &fdset_id, &err); |- if (err) { |- goto out; |- } |- } |- if (visit_optional(v, "opaque", &has_opaque)) { |- visit_type_str(v, "opaque", &opaque, &err); |- if (err) { |- goto out; |- } |+ visit_type_q_obj_add_fd_arg_members(v, &arg, &err); |+ if (err) { |+ goto out; | } | |- retval = qmp_add_fd(has_fdset_id, fdset_id, has_opaque, opaque, &err); |+ retval = qmp_add_fd(arg.has_fdset_id, arg.fdset_id, arg.has_opaque, arg.opaque, &err); | if (err) { | goto out; | } |@@ -88,12 +77,7 @@ out: | qmp_input_visitor_cleanup(qiv); | qdv = qapi_dealloc_visitor_new(); | v = qapi_dealloc_get_visitor(qdv); |- if (visit_optional(v, "fdset-id", &has_fdset_id)) { |- visit_type_int(v, "fdset-id", &fdset_id, NULL); |- } |- if (visit_optional(v, "opaque", &has_opaque)) { |- visit_type_str(v, "opaque", &opaque, NULL); |- } |+ visit_type_q_obj_add_fd_arg_members(v, &arg, NULL); | qapi_dealloc_visitor_cleanup(qdv); | } This also has the nice side effect of eliminating a chance of collision between argument QMP names and local variables. This patch also paves the way for some followup simplifications in the generator, in subsequent patches. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-9-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi-event: Utilize implicit struct visitsEric Blake
Rather than generate inline per-member visits, take advantage of the 'visit_type_FOO_members()' function for emitting events. This is possible now that implicit structs can be visited like any other. Generated code shrinks accordingly; by initializing a struct based on parameters, through a new gen_param_var() helper, like: |@@ -338,6 +250,9 @@ void qapi_event_send_block_job_error(con | QMPEventFuncEmit emit = qmp_event_get_func_emit(); | QmpOutputVisitor *qov; | Visitor *v; |+ q_obj_BLOCK_JOB_ERROR_arg param = { |+ (char *)device, operation, action |+ }; | | if (!emit) { | return; @@ -351,19 +266,7 @@ void qapi_event_send_block_job_error(con | if (err) { | goto out; | } |- visit_type_str(v, "device", (char **)&device, &err); |- if (err) { |- goto out_obj; |- } |- visit_type_IoOperationType(v, "operation", &operation, &err); |- if (err) { |- goto out_obj; |- } |- visit_type_BlockErrorAction(v, "action", &action, &err); |- if (err) { |- goto out_obj; |- } |-out_obj: |+ visit_type_q_obj_BLOCK_JOB_ERROR_arg_members(v, &param, &err); | visit_end_struct(v, err ? NULL : &err); Notice that the initialization of 'param' has to cast away const (just as the old gen_visit_members() had to do): we can't change the signature of the user function (which uses 'const char *'), but have to assign it to a non-const QAPI object (which requires 'char *'). While touching this, document with a FIXME comment that there is still a potential collision between QMP members and our choice of local variable names within qapi_event_send_FOO(). This patch also paves the way for some followup simplifications in the generator, in subsequent patches. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-8-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi-event: Drop qmp_output_get_qobject() null checkEric Blake
qmp_output_get_qobject() was changed never to return null some time ago (in commit 6c2f9a15), but the qapi_event_send_FOO() functions still check. Clean that up: |@@ -28,7 +28,6 @@ void qapi_event_send_acpi_device_ost(ACP | QMPEventFuncEmit emit; | QmpOutputVisitor *qov; | Visitor *v; |- QObject *obj; | | emit = qmp_event_get_func_emit(); | if (!emit) { |@@ -54,10 +53,7 @@ out_obj: | goto out; | } | |- obj = qmp_output_get_qobject(qov); |- g_assert(obj); |- |- qdict_put_obj(qmp, "data", obj); |+ qdict_put_obj(qmp, "data", qmp_output_get_qobject(qov)); | emit(QAPI_EVENT_ACPI_DEVICE_OST, qmp, &err); | | out: Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-7-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Emit implicit structs in generated CEric Blake
We already have several places that want to visit all the members of an implicit object within a larger context (simple union variant, event with anonymous data, command with anonymous arguments struct); and will be adding another one soon (the ability to declare an anonymous base for a flat union). Having a C struct declared for these implicit types, along with a visit_type_FOO_members() helper function, will make for fewer special cases in our generator. We do not, however, need qapi_free_FOO() or visit_type_FOO() functions for implicit types, because they should not be used directly outside of the generated code. This is done by adding a conditional in visit_object_type() for both qapi-types.py and qapi-visit.py based on the object name. The comparison of "name.startswith('q_')" is a bit hacky (it's basically duplicating what .is_implicit() already uses), but beats changing the signature of the visit_object_type() callback to pass a new 'implicit' flag. The hack should be temporary: we are considering adding a future patch that consolidates the narrow visit_object_type(..., base, local_members, variants) and visit_object_type_flat(..., all_members, variants) [where different sets of information are already broken out, and the QAPISchemaObjectType is no longer available] into a broader visit_object_type(obj_type) [where the visitor can query the needed fields from obj_type directly]. Also, now that we WANT to output C code for implicits, we no longer need the visit_needed() filter, leaving 'q_empty' as the only object still needing a special case. Remember, 'q_empty' is the only built-in generated object, which means that without a special case it would be emitted in multiple files (the main qapi-types.h and in qga-qapi-types.h) causing compilation failure due to redefinition. But since it has no members, it's easier to just avoid an attempt to visit that particular type; since gen_object() is called recursively, we also prime the objects_seen set to cover any recursion into the empty type. The patch relies on the changed naming of implicit types in the previous patch. It is a bit unfortunate that the generated struct names and visit_type_FOO_members() don't match normal naming conventions, but it's not too bad, since they will only be used in generated code. The generated code grows substantially in size: the implicit '-wrapper' types must be emitted in qapi-types.h before any union can include an unboxed member of that type. Arguably, the '-args' types could be emitted in a private header for just qapi-visit.c and qmp-marshal.c, rather than polluting qapi-types.h; but adding complexity to the generator to split the output location according to role doesn't seem worth the maintenance costs. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-6-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Adjust names of implicit typesEric Blake
The original choice of ':obj-' as the prefix for implicit types made it obvious that we weren't going to clash with any user-defined names, which cannot contain ':'. But now we want to create structs for implicit types, to get rid of special cases in the generators, and our use of ':' in implicit names needs a tweak to produce valid C code. We could transliterate ':' to '_', except that C99 mandates that "identifiers that begin with an underscore are always reserved for use as identifiers with file scope in both the ordinary and tag name spaces". So it's time to change our naming convention: we can instead use the 'q_' prefix that we reserved for ourselves back in commit 9fb081e0. Technically, since we aren't planning on exposing the empty type in generated code, we could keep the name ':empty', but renaming it to 'q_empty' makes the check for startswith('q_') cover all implicit types, whether or not code is generated for them. As long as we don't declare 'empty' or 'obj' ticklish, it shouldn't clash with c_name() prepending 'q_' to the user's ticklish names. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-5-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Make c_type() more OO-likeEric Blake
QAPISchemaType.c_type() is a bit awkward: it takes two optional boolean flags is_param and is_unboxed, and they should never both be True. Add a new method for each of the flags, and drop the flags from c_type(). Most callers pass no flags; they remain unchanged. One caller passes is_param=True; call the new .c_param_type() instead. One caller passes is_unboxed=True, except for simple union types. This is actually an ugly special case that will go away soon, so until then, we now have to call either .c_type() or the new .c_unboxed_type(). Tolerable in the interim. It requires slightly more Python, but is arguably easier to read. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-4-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Fix command with named empty argument typeEric Blake
The generator special-cased { 'command':'foo', 'data': {} } to avoid emitting a visitor variable, but failed to see that { 'struct':'NamedEmptyType, 'data': {} } { 'command':'foo', 'data':'NamedEmptyType' } needs the same treatment. There, the generator happily generates a visitor to get no arguments, and a visitor to destroy no arguments; and the compiler isn't happy with that, as demonstrated by the updated qapi-schema-test.json: tests/test-qmp-marshal.c: In function ‘qmp_marshal_user_def_cmd0’: tests/test-qmp-marshal.c:264:14: error: variable ‘v’ set but not used [-Werror=unused-but-set-variable] Visitor *v; ^ No change to generated code except for the testsuite addition. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-3-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18qapi: Assert in places where variants are not handledEric Blake
We are getting closer to the point where we could use one union as the base or variant type within another union type (as long as there are no collisions between any possible combination of member names allowed across all discriminator choices). But until we get to that point, it is worth asserting that variants are not present in places where we are not prepared to handle them: when exploding a type into a parameter list, we do not expect variants. The qapi.py code is already checking this, via the older check_type() method; but someday we hope to get rid of that and move checking into QAPISchema*.check(). The two asserts added here make sure any refactoring still catches problems, and makes it locally obvious why we can iterate over only type.members without worrying about type.variants. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-2-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-16update-linux-headers.sh: Fake types.h doesn't need to include anythingPeter Maydell
We have a fake linux/types.h which we create in update-linux-headers.h. Now that every QEMU source file includes osdep.h, this fake header doesn't need to include anything at all. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 1456237112-32662-4-git-send-email-peter.maydell@linaro.org
2016-03-16include/config.h: RemovePeter Maydell
include/config.h just includes config-target.h (and used to also include config-host.h). It is now obsolete and unused, because osdep.h does this job, so remove it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 1456237112-32662-3-git-send-email-peter.maydell@linaro.org
2016-03-15update-linux-headers: Add userfaultfd.hAlexey Kardashevskiy
userfailtfd.h is used by post-copy migration so include it to the update-linux-headers.sh as we want it updated altogether with other kernel headers. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-Id: <1455512381-15271-1-git-send-email-aik@ozlabs.ru> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07memory: Drop MemoryRegion.ram_addrFam Zheng
All references to mr->ram_addr are replaced by memory_region_get_ram_addr(mr) (except for a few assertions that are replaced with mr->ram_block). Reviewed-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-5-git-send-email-famz@redhat.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-05qapi: Drop useless 'data' member of unionsEric Blake
We started moving away from the use of the 'void *data' member in the C union corresponding to a QAPI union back in commit 544a373; recent commits have gotten rid of other uses. Now that it is completely unused, we can remove the member itself as well as the FIXME comment. Update the testsuite to drop the negative test union-clash-data. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1457021813-10704-11-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05qapi-visit: Expose visit_type_FOO_members()Eric Blake
Dan Berrange reported a case where he needs to work with a QCryptoBlockOptions union type using the OptsVisitor, but only visit one of the branches of that type (the discriminator is not visited directly, but learned externally). When things were boxed, it was easy: just visit the variant directly, which took care of both allocating the variant and visiting its members, then store that pointer in the union type. But now that things are unboxed, we need a way to visit the members without allocation, done by exposing visit_type_FOO_members() to the user. Before the patch, we had quite a bit of code associated with object_members_seen to make sure that a declaration of the helper was in scope before any use of the function. But now that the helper is public and declared in the header, the .c file no longer needs to worry about topological sorting (the helper is always in scope), which leads to some nice cleanups. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-4-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05qapi: Rename 'fields' to 'members' in generated C codeEric Blake
C types and JSON objects don't have fields, but members. We shouldn't gratuitously invent terminology. This patch is a strict renaming of static genarated functions, plus the naming of the dummy filler member for empty structs, before the next patch exposes some of that naming to the rest of the code base. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-3-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05qapi: Rename 'fields' to 'members' in generatorEric Blake
C types and JSON objects don't have fields, but members. We shouldn't gratuitously invent terminology. This patch is a strict renaming of generator code internals (including testsuite comments), before later patches rename C interfaces. No change to generated code with this patch. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-2-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-04qmp-shell: fix pretty printing of JSON responsesDaniel P. Berrange
Pretty printing of JSON responses is important to be able to understand large responses from query commands in particular. Unfortunately this was broken during the addition of the verbose flag in commit 1ceca07e48ead0dd2e41576c81d40e6a91cafefd Author: John Snow <jsnow@redhat.com> Date: Wed Apr 29 15:14:04 2015 -0400 scripts: qmp-shell: Add verbose flag This is because that change turned the python data structure into a formatted JSON string before the pretty print was given it. So we're just pretty printing a string, which is a no-op. The original pretty printer would output python objects. (QEMU) query-chardev { u'return': [ { u'filename': u'vc', u'frontend-open': False, u'label': u'parallel0'}, { u'filename': u'vc', u'frontend-open': True, u'label': u'serial0'}, { u'filename': u'unix:/tmp/qemp,server', u'frontend-open': True, u'label': u'compat_monitor0'}]} This fixes the problem by switching to outputting pretty formatted JSON text instead. This has the added benefit that the pretty printed output is now valid JSON text. Due to the way the verbose flag was handled, the pretty printing now applies to the command sent, as well as its response: (QEMU) query-chardev { "execute": "query-chardev", "arguments": {} } { "return": [ { "frontend-open": false, "label": "parallel0", "filename": "vc" }, { "frontend-open": true, "label": "serial0", "filename": "vc" }, { "frontend-open": true, "label": "compat_monitor0", "filename": "unix:/tmp/qmp,server" } ] } Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1456224706-1591-1-git-send-email-berrange@redhat.com> Tested-by: Kashyap Chamarthy <kchamart@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> [Bonus fix: multiple -p now work] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-01trace: Add a proper API to manage auto-generated events from the 'tcg' propertyLluís Vilanova
Formalizes the existence of the 'event_trans' and 'event_exec' event attributes, which until now were monkey-patched only when necessary. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Message-id: 145640558759.20978.6374959404425591089.stgit@localhost Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-03-01trace: Add 'vcpu' event property to trace guest vCPULluís Vilanova
This property identifies events that trace vCPU-specific information. It adds a "CPUState*" argument to events with the property, identifying the vCPU raising the event. TCG translation events also have a "TCGv_env" implicit argument that is later used as the "CPUState*" argument at execution time. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Message-id: 145641861797.30295.6991314023181842105.stgit@localhost Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-03-01trace: Add helper function to cast event argumentsLluís Vilanova
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Message-id: 145641860680.30295.1873612736245870753.stgit@localhost Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-03-01trace: Remove unnecessary intermediate event copiesLluís Vilanova
The current code forces the use of a chain of ".original" dereferences, which looks odd. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Message-id: 145641858988.30295.7223459456488075843.stgit@localhost Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-03-01trace: Extend API to manage event argumentsLluís Vilanova
Lets the user manage event arguments as a list, and simplifies argument concatenation. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 145641858432.30295.3069911069472672646.stgit@localhost Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-03-01qapi: rename InputAxis values.Gerd Hoffmann
Lowercase them. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-01qapi: rename input buttonsGerd Hoffmann
All lowercase, use-dash instead of CamelCase. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-25Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Asynchronous dump-guest-memory from Peter * improved logging with -D -daemonize from Dimitris * more address_space_* optimization from Gonglei * TCG xsave/xrstor thinko fix * chardev bugfix and documentation patch # gpg: Signature made Thu 25 Feb 2016 15:12:27 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: target-i386: fix confusion in xcr0 bit position vs. mask chardev: Properly initialize ChardevCommon components memory: Remove unreachable return statement memory: optimize qemu_get_ram_ptr and qemu_ram_ptr_length exec: store RAMBlock pointer into memory region log: Redirect stderr to logfile if deamonized dump-guest-memory: add qmp event DUMP_COMPLETED Dump: add hmp command "info dump" Dump: add qmp command "query-dump" DumpState: adding total_size and written_size fields dump-guest-memory: add "detach" support dump-guest-memory: disable dump when in INMIGRATE state dump-guest-memory: introduce dump_process() helper function. dump-guest-memory: add dump_in_progress() helper function dump-guest-memory: using static DumpState, add DumpStatus dump-guest-memory: add "detach" flag for QMP/HMP interfaces. dump-guest-memory: cleanup: removing dump_{error|cleanup}(). scripts/kvm/kvm_stat: Fix missing right parantheses and ".format(...)" qemu-options.hx: Improve documentation of chardev multiplexing mode Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-23Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20160223' into stagingPeter Maydell
Queued TCG patches # gpg: Signature made Tue 23 Feb 2016 18:27:44 GMT using RSA key ID 4DD0279B # gpg: Good signature from "Richard Henderson <rth7680@gmail.com>" # gpg: aka "Richard Henderson <rth@redhat.com>" # gpg: aka "Richard Henderson <rth@twiddle.net>" * remotes/rth/tags/pull-tcg-20160223: tcg: Remove unnecessary osdep.h includes from tcg-target.inc.c scripts/clean-includes: Ignore .inc.c files tcg: Rename tcg-target.c to tcg-target.inc.c target-sparc: Use global registers for the register window target-sparc: Tidy global register initialization tcg: Allocate indirect_base temporaries in a different order tcg: Implement indirect memory registers tcg: Work around clang bug wrt enum ranges, part 2 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-23scripts/clean-includes: Ignore .inc.c filesPeter Maydell
Ignore files which have a .inc.c extension -- these are not headers but they are not standalone C source files either, so we can't make any automated decisions about what #include directives they should have. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <1456238983-10160-3-git-send-email-peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-02-23tracetool: Include osdep.h in generated-ust.cPeter Maydell
When generating the trace/generated-ust.c source file, make sure it includes osdep.h as its first include. This fixes compilation with --enable-trace-backends=ust Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1456240661-15422-1-git-send-email-peter.maydell@linaro.org Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23scripts/clean-includes: Add --all optionPeter Maydell
Add a --all option which will run the script on every C source and header file in the repository (except for those in a few directories which contain standalone guest code). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23scripts/clean-includes: Enhance to handle header filesPeter Maydell
Enhance clean-includes to handle header files as well as .c source files. For headers we merely remove all the redundant #include lines, including any includes of qemu/osdep.h itself. There is a simple mollyguard on the include file processing to skip a few key headers like osdep.h itself, to avoid producing bad patches if the script is run on every file in include/. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-22scripts/kvm/kvm_stat: Fix missing right parantheses and ".format(...)"Fam Zheng
They seem to have snuck in when applying Janosch Frank <frankja@linux.vnet.ibm.com>'s previous patch. Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1455848416-13177-1-git-send-email-famz@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com> Tested-by: Janosch Frank <frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-02-19qapi: Change visit_start_implicit_struct to visit_start_alternateEric Blake
After recent changes, the only remaining use of visit_start_implicit_struct() is for allocating the space needed when visiting an alternate. Since the term 'implicit struct' is hard to explain, rename the function to its current usage. While at it, we can merge the functionality of visit_get_next_type() into the same function, making it more like visit_start_struct(). Generated code is now slightly smaller: | { | Error *err = NULL; | |- visit_start_implicit_struct(v, (void**) obj, sizeof(BlockdevRef), &err); |+ visit_start_alternate(v, name, (GenericAlternate **)obj, sizeof(**obj), |+ true, &err); | if (err) { | goto out; | } |- visit_get_next_type(v, name, &(*obj)->type, true, &err); |- if (err) { |- goto out_obj; |- } | switch ((*obj)->type) { | case QTYPE_QDICT: | visit_start_struct(v, name, NULL, 0, &err); ... | } |-out_obj: |- visit_end_implicit_struct(v); |+ visit_end_alternate(v); | out: | error_propagate(errp, err); | } Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-16-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Don't box branches of flat unionsEric Blake
There's no reason to do two malloc's for a flat union; let's just inline the branch struct directly into the C union branch of the flat union. Surprisingly, fewer clients were actually using explicit references to the branch types in comparison to the number of flat unions thus modified. This lets us reduce the hack in qapi-types:gen_variants() added in the previous patch; we no longer need to distinguish between alternates and flat unions. The change to unboxed structs means that u.data (added in commit cee2dedb) is now coincident with random fields of each branch of the flat union, whereas beforehand it was only coincident with pointers (since all branches of a flat union have to be objects). Note that this was already the case for simple unions - but there we got lucky. Remember, visit_start_union() blindly returns true for all visitors except for the dealloc visitor, where it returns the value !!obj->u.data, and that this result then controls whether to proceed with the visit to the variant. Pre-patch, this meant that flat unions were testing whether the boxed pointer was still NULL, and thereby skipping visit_end_implicit_struct() and avoiding a NULL dereference if the pointer had not been allocated. The same was true for simple unions where the current branch had pointer type, except there we bypassed visit_type_FOO(). But for simple unions where the current branch had scalar type, the contents of that scalar meant that the decision to call visit_type_FOO() was data-dependent - the reason we got lucky there is that visit_type_FOO() for all scalar types in the dealloc visitor is a no-op (only the pointer variants had anything to free), so it did not matter whether the dealloc visit was skipped. But with this patch, we would risk leaking memory if we could skip a call to visit_type_FOO_fields() based solely on a data-dependent decision. But notice: in the dealloc visitor, visit_type_FOO() already handles a NULL obj - it was only the visit_type_implicit_FOO() that was failing to check for NULL. And now that we have refactored things to have the branch be part of the parent struct, we no longer have a separate pointer that can be NULL in the first place. So we can just delete the call to visit_start_union() altogether, and blindly visit the branch type; there is no change in behavior except to the dealloc visitor, where we now unconditionally visit the branch, but where that visit is now always safe (for a flat union, we can no longer dereference NULL, and for a simple union, visit_type_FOO() was already safely handling NULL on pointer types). Unfortunately, simple unions are not as easy to switch to unboxed layout; because we are special-casing the hidden implicit type with a single 'data' member, we really DO need to keep calling another layer of visit_start_struct(), with a second malloc; although there are some cleanups planned for simple unions in later patches. visit_start_union() and gen_visit_implicit_struct() are now unused. Drop them. Note that after this patch, the only remaining use of visit_start_implicit_struct() is for alternate types; the next patch will do further cleanup based on that fact. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-14-git-send-email-eblake@redhat.com> [Dead code deletion squashed in, commit message updated accordingly] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Don't box struct branch of alternateEric Blake
There's no reason to do two malloc's for an alternate type visiting a QAPI struct; let's just inline the struct directly as the C union branch of the struct. Surprisingly, no clients were actually using the struct member prior to this patch outside of the testsuite; an earlier patch in the series added some testsuite coverage to make the effect of this patch more obvious. In qapi.py, c_type() gains a new is_unboxed flag to control when we are emitting a C struct unboxed within the context of an outer struct (different from our other two modes of usage with no flags for normal local variable declarations, and with is_param for adding 'const' in a parameter list). I don't know if there is any more pythonic way of collapsing the two flags into a single parameter, as we never have a caller setting both flags at once. Ultimately, we want to also unbox branches for QAPI unions, but as that touches a lot more client code, it is better as separate patches. But since unions and alternates share gen_variants(), I had to hack in a way to test if we are visiting an alternate type for setting the is_unboxed flag: look for a non-object branch. This works because alternates have at least two branches, with at most one object branch, while unions have only object branches. The hack will go away in a later patch. The generated code difference to qapi-types.h is relatively small: | struct BlockdevRef { | QType type; | union { /* union tag is @type */ | void *data; |- BlockdevOptions *definition; |+ BlockdevOptions definition; | char *reference; | } u; | }; The corresponding spot in qapi-visit.c calls visit_type_FOO(), which first calls visit_start_struct() to allocate or deallocate the member and handle a layer of {} from the JSON stream, then visits the members. To peel off the indirection and the memory management that comes with it, we inline this call, then suppress allocation / deallocation by passing NULL to visit_start_struct(), and adjust the member visit: | switch ((*obj)->type) { | case QTYPE_QDICT: |- visit_type_BlockdevOptions(v, name, &(*obj)->u.definition, &err); |+ visit_start_struct(v, name, NULL, 0, &err); |+ if (err) { |+ break; |+ } |+ visit_type_BlockdevOptions_fields(v, &(*obj)->u.definition, &err); |+ error_propagate(errp, err); |+ err = NULL; |+ visit_end_struct(v, &err); | break; | case QTYPE_QSTRING: | visit_type_str(v, name, &(*obj)->u.reference, &err); The visit of non-object fields is unchanged. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-13-git-send-email-eblake@redhat.com> [Commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Use common idiom in gen_visit_fields_decl()Eric Blake
We have several instances of methods that do an early exit if output is not needed, then log that output is being generated, and finally produce the output; see qapi-types.py:gen_object() and qapi-visit.py:gen_visit_implicit_struct(). The odd man out was gen_visit_fields_decl(); rearrange it to be more like the others. No semantic change or difference to generated code. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-12-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Emit structs used as variants in topological orderEric Blake
Right now, we emit the branches of union types as a boxed pointer, and it suffices to have a forward declaration of the type. However, a future patch will swap things to directly use the branch type, instead of hiding it behind a pointer. For this to work, the compiler needs the full definition of the type, not just a forward declaration, prior to the union that is including the branch type. This patch just adds topological sorting to hoist all types mentioned in a branch of a union to be fully declared before the union itself. The sort is always possible, because we do not allow circular union types that include themselves as a direct branch (it is, however, still possible to include a branch type that itself has a pointer to the union, for a type that can indirectly recursively nest itself - that remains safe, because that the member of the branch type will remain a pointer, and the QMP representation of such a type adds another {} for each recurring layer of the union type). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-11-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Adjust layout of FooList typesEric Blake
By sticking the next pointer first, we don't need a union with 64-bit padding for smaller types. On 32-bit platforms, this can reduce the size of uint8List from 16 bytes (or 12, depending on whether 64-bit ints can tolerate 4-byte alignment) down to 8. It has no effect on 64-bit platforms (where alignment still dictates a 16-byte struct); but fewer anonymous unions is still a win in my book. It requires visit_next_list() to gain a size parameter, to know what size element to allocate; comparable to the size parameter of visit_start_struct(). I debated about going one step further, to allow for fewer casts, by doing: typedef GenericList GenericList; struct GenericList { GenericList *next; }; struct FooList { GenericList base; Foo *value; }; so that you convert to 'GenericList *' by '&foolist->base', and back by 'container_of(generic, GenericList, base)' (as opposed to the existing '(GenericList *)foolist' and '(FooList *)generic'). But doing that would require hoisting the declaration of GenericList prior to inclusion of qapi-types.h, rather than its current spot in visitor.h; it also makes iteration a bit more verbose through 'foolist->base.next' instead of 'foolist->next'. Note that for lists of objects, the 'value' payload is still hidden behind a boxed pointer. Someday, it would be nice to do: struct FooList { FooList *next; Foo value; }; for one less level of malloc for each list element. This patch is a step in that direction (now that 'next' is no longer at a fixed non-zero offset within the struct, we can store more than just a pointer's-worth of data as the value payload), but the actual conversion would be a task for another series, as it will touch a lot of code. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-10-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Less indirection in visit_type_Foo_fields()Eric Blake
We were passing 'Foo **obj' to the internal helper function, but all uses within the helper were via reads of '*obj'. Refactor things to pass one less level of indirection, by having the callers dereference before calling. For an example of the generated code change: |-static void visit_type_BalloonInfo_fields(Visitor *v, BalloonInfo **obj, Error **errp) |+static void visit_type_BalloonInfo_fields(Visitor *v, BalloonInfo *obj, Error **errp) | { | Error *err = NULL; | |- visit_type_int(v, "actual", &(*obj)->actual, &err); |+ visit_type_int(v, "actual", &obj->actual, &err); | error_propagate(errp, err); | } | |@@ -261,7 +261,7 @@ void visit_type_BalloonInfo(Visitor *v, | if (!*obj) { | goto out_obj; | } |- visit_type_BalloonInfo_fields(v, obj, &err); |+ visit_type_BalloonInfo_fields(v, *obj, &err); | out_obj: The refactoring will also make it easier to reuse the helpers in a future patch when implicit structs are stored directly in the parent struct rather than boxed through a pointer. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-9-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Unify struct and union visitMarkus Armbruster
gen_visit_union() is now just like gen_visit_struct(). Rename it to gen_visit_object(), use it for structs, and drop gen_visit_struct(). Output is unchanged. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1453902888-20457-4-git-send-email-armbru@redhat.com> [split out variant handling, rebase to earlier changes] Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-8-git-send-email-eblake@redhat.com>
2016-02-19qapi: Visit variants in visit_type_FOO_fields()Eric Blake
We initially created the static visit_type_FOO_fields() helper function for reuse of code - we have cases where the initial setup for a visit has different allocation (depending on whether the fields represent a stand-alone type or are embedded as part of a larger type), but where the actual field visits are identical once a pointer is available. Up until the previous patch, visit_type_FOO_fields() was only used for structs (no variants), so it was covering every field for each type where it was emitted. Meanwhile, the code for visiting unions looks like: static visit_type_U_fields() { visit base; visit local_members; } visit_type_U() { visit_start_struct(); visit_type_U_fields(); visit variants; visit_end_struct(); } which splits the fields of the union visit across two functions. Move the code to visit variants to live inside visit_type_U_fields(), while making it conditional on having variants so that all other instances of the helper function remain unchanged. This is also a step closer towards unifying struct and union visits, and towards allowing one union type to be the branch of another flat union. The resulting diff to the generated code is a bit hard to read, but it can be verified that it touches only union types, and that the end result is the following general structure: static visit_type_U_fields() { visit base; visit local_members; visit variants; } visit_type_U() { visit_start_struct(); visit_type_U_fields(); visit_end_struct(); } Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-7-git-send-email-eblake@redhat.com> [gen_visit_struct_fields() parameter variants made mandatory] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Simplify how we visit common union membersMarkus Armbruster
For a simple union SU, gen_visit_union() generates a visit of its single tag member, like this: visit_type_SUKind(v, "type", &(*obj)->type, &err); For a flat union FU with base B, it generates a visit of its base fields: visit_type_B_fields(v, (B **)obj, &err); Instead, we can simply visit the common members using the same fields visit function we use for structs, generated with gen_visit_struct_fields(). This function visits the base if any, then the local members. For a simple union SU, visit_type_SU_fields() contains exactly the old tag member visit, because there is no base, and the tag member is the only member. For instance, the code generated for qapi-schema.json's KeyValue changes like this: +static void visit_type_KeyValue_fields(Visitor *v, KeyValue **obj, Error **errp) +{ + Error *err = NULL; + + visit_type_KeyValueKind(v, "type", &(*obj)->type, &err); + if (err) { + goto out; + } + +out: + error_propagate(errp, err); +} + void visit_type_KeyValue(Visitor *v, const char *name, KeyValue **obj, Error **errp) { Error *err = NULL; @@ -4863,7 +4911,7 @@ void visit_type_KeyValue(Visitor *v, con if (!*obj) { goto out_obj; } - visit_type_KeyValueKind(v, "type", &(*obj)->type, &err); + visit_type_KeyValue_fields(v, obj, &err); if (err) { goto out_obj; } For a flat union FU, visit_type_FU_fields() contains exactly the old base fields visit, because there is a base, but no members. For instance, the code generated for qapi-schema.json's CpuInfo changes like this: static void visit_type_CpuInfoBase_fields(Visitor *v, CpuInfoBase **obj, Error **errp); +static void visit_type_CpuInfo_fields(Visitor *v, CpuInfo **obj, Error **errp) +{ + Error *err = NULL; + + visit_type_CpuInfoBase_fields(v, (CpuInfoBase **)obj, &err); + if (err) { + goto out; + } + +out: + error_propagate(errp, err); +} + static void visit_type_CpuInfoX86_fields(Visitor *v, CpuInfoX86 **obj, Error **errp) ... @@ -3485,7 +3509,7 @@ void visit_type_CpuInfo(Visitor *v, cons if (!*obj) { goto out_obj; } - visit_type_CpuInfoBase_fields(v, (CpuInfoBase **)obj, &err); + visit_type_CpuInfo_fields(v, obj, &err); if (err) { goto out_obj; } As you see, the generated code grows a bit, but in practice, it's lost in the noise: qapi-schema.json's qapi-visit.c gains roughly 1%. This simplification became possible with commit 441cbac "qapi-visit: Convert to QAPISchemaVisitor, fixing bugs". It's a step towards unifying gen_struct() and gen_union(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1453902888-20457-2-git-send-email-armbru@redhat.com> [improve commit message examples] Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-6-git-send-email-eblake@redhat.com> [Commit message tweaked]
2016-02-19qapi: Forbid 'any' inside an alternateEric Blake
The whole point of an alternate is to allow some type-safety while still accepting more than one JSON type. Meanwhile, the 'any' type exists to bypass type-safety altogether. The two are incompatible: you can't accept every type, and still tell which branch of the alternate to use for the parse; fix this to give a sane error instead of a Python stack trace. Note that other types that can't be alternate members are caught earlier, by check_type(). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-4-git-send-email-eblake@redhat.com> [Commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>