build: move libqemuutil.a components to util/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 359 deletions

diff --git a/qemu-thread-win32.c b/qemu-thread-win32.c
deleted file mode 100644
index 517878dcc1..0000000000
--- a/qemu-thread-win32.c
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * Win32 implementation for mutex/cond/thread functions
- *
- * Copyright Red Hat, Inc. 2010
- *
- * Author:
- *  Paolo Bonzini <pbonzini@redhat.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- */
-#include "qemu-common.h"
-#include "qemu/thread.h"
-#include <process.h>
-#include <assert.h>
-#include <limits.h>
-
-static void error_exit(int err, const char *msg)
-{
-    char *pstr;
-
-    FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
-                  NULL, err, 0, (LPTSTR)&pstr, 2, NULL);
-    fprintf(stderr, "qemu: %s: %s\n", msg, pstr);
-    LocalFree(pstr);
-    abort();
-}
-
-void qemu_mutex_init(QemuMutex *mutex)
-{
-    mutex->owner = 0;
-    InitializeCriticalSection(&mutex->lock);
-}
-
-void qemu_mutex_destroy(QemuMutex *mutex)
-{
-    assert(mutex->owner == 0);
-    DeleteCriticalSection(&mutex->lock);
-}
-
-void qemu_mutex_lock(QemuMutex *mutex)
-{
-    EnterCriticalSection(&mutex->lock);
-
-    /* Win32 CRITICAL_SECTIONs are recursive.  Assert that we're not
-     * using them as such.
-     */
-    assert(mutex->owner == 0);
-    mutex->owner = GetCurrentThreadId();
-}
-
-int qemu_mutex_trylock(QemuMutex *mutex)
-{
-    int owned;
-
-    owned = TryEnterCriticalSection(&mutex->lock);
-    if (owned) {
-        assert(mutex->owner == 0);
-        mutex->owner = GetCurrentThreadId();
-    }
-    return !owned;
-}
-
-void qemu_mutex_unlock(QemuMutex *mutex)
-{
-    assert(mutex->owner == GetCurrentThreadId());
-    mutex->owner = 0;
-    LeaveCriticalSection(&mutex->lock);
-}
-
-void qemu_cond_init(QemuCond *cond)
-{
-    memset(cond, 0, sizeof(*cond));
-
-    cond->sema = CreateSemaphore(NULL, 0, LONG_MAX, NULL);
-    if (!cond->sema) {
-        error_exit(GetLastError(), __func__);
-    }
-    cond->continue_event = CreateEvent(NULL,    /* security */
-                                       FALSE,   /* auto-reset */
-                                       FALSE,   /* not signaled */
-                                       NULL);   /* name */
-    if (!cond->continue_event) {
-        error_exit(GetLastError(), __func__);
-    }
-}
-
-void qemu_cond_destroy(QemuCond *cond)
-{
-    BOOL result;
-    result = CloseHandle(cond->continue_event);
-    if (!result) {
-        error_exit(GetLastError(), __func__);
-    }
-    cond->continue_event = 0;
-    result = CloseHandle(cond->sema);
-    if (!result) {
-        error_exit(GetLastError(), __func__);
-    }
-    cond->sema = 0;
-}
-
-void qemu_cond_signal(QemuCond *cond)
-{
-    DWORD result;
-
-    /*
-     * Signal only when there are waiters.  cond->waiters is
-     * incremented by pthread_cond_wait under the external lock,
-     * so we are safe about that.
-     */
-    if (cond->waiters == 0) {
-        return;
-    }
-
-    /*
-     * Waiting threads decrement it outside the external lock, but
-     * only if another thread is executing pthread_cond_broadcast and
-     * has the mutex.  So, it also cannot be decremented concurrently
-     * with this particular access.
-     */
-    cond->target = cond->waiters - 1;
-    result = SignalObjectAndWait(cond->sema, cond->continue_event,
-                                 INFINITE, FALSE);
-    if (result == WAIT_ABANDONED || result == WAIT_FAILED) {
-        error_exit(GetLastError(), __func__);
-    }
-}
-
-void qemu_cond_broadcast(QemuCond *cond)
-{
-    BOOLEAN result;
-    /*
-     * As in pthread_cond_signal, access to cond->waiters and
-     * cond->target is locked via the external mutex.
-     */
-    if (cond->waiters == 0) {
-        return;
-    }
-
-    cond->target = 0;
-    result = ReleaseSemaphore(cond->sema, cond->waiters, NULL);
-    if (!result) {
-        error_exit(GetLastError(), __func__);
-    }
-
-    /*
-     * At this point all waiters continue. Each one takes its
-     * slice of the semaphore. Now it's our turn to wait: Since
-     * the external mutex is held, no thread can leave cond_wait,
-     * yet. For this reason, we can be sure that no thread gets
-     * a chance to eat *more* than one slice. OTOH, it means
-     * that the last waiter must send us a wake-up.
-     */
-    WaitForSingleObject(cond->continue_event, INFINITE);
-}
-
-void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex)
-{
-    /*
-     * This access is protected under the mutex.
-     */
-    cond->waiters++;
-
-    /*
-     * Unlock external mutex and wait for signal.
-     * NOTE: we've held mutex locked long enough to increment
-     * waiters count above, so there's no problem with
-     * leaving mutex unlocked before we wait on semaphore.
-     */
-    qemu_mutex_unlock(mutex);
-    WaitForSingleObject(cond->sema, INFINITE);
-
-    /* Now waiters must rendez-vous with the signaling thread and
-     * let it continue.  For cond_broadcast this has heavy contention
-     * and triggers thundering herd.  So goes life.
-     *
-     * Decrease waiters count.  The mutex is not taken, so we have
-     * to do this atomically.
-     *
-     * All waiters contend for the mutex at the end of this function
-     * until the signaling thread relinquishes it.  To ensure
-     * each waiter consumes exactly one slice of the semaphore,
-     * the signaling thread stops until it is told by the last
-     * waiter that it can go on.
-     */
-    if (InterlockedDecrement(&cond->waiters) == cond->target) {
-        SetEvent(cond->continue_event);
-    }
-
-    qemu_mutex_lock(mutex);
-}
-
-void qemu_sem_init(QemuSemaphore *sem, int init)
-{
-    /* Manual reset.  */
-    sem->sema = CreateSemaphore(NULL, init, LONG_MAX, NULL);
-}
-
-void qemu_sem_destroy(QemuSemaphore *sem)
-{
-    CloseHandle(sem->sema);
-}
-
-void qemu_sem_post(QemuSemaphore *sem)
-{
-    ReleaseSemaphore(sem->sema, 1, NULL);
-}
-
-int qemu_sem_timedwait(QemuSemaphore *sem, int ms)
-{
-    int rc = WaitForSingleObject(sem->sema, ms);
-    if (rc == WAIT_OBJECT_0) {
-        return 0;
-    }
-    if (rc != WAIT_TIMEOUT) {
-        error_exit(GetLastError(), __func__);
-    }
-    return -1;
-}
-
-void qemu_sem_wait(QemuSemaphore *sem)
-{
-    if (WaitForSingleObject(sem->sema, INFINITE) != WAIT_OBJECT_0) {
-        error_exit(GetLastError(), __func__);
-    }
-}
-
-struct QemuThreadData {
-    /* Passed to win32_start_routine.  */
-    void             *(*start_routine)(void *);
-    void             *arg;
-    short             mode;
-
-    /* Only used for joinable threads. */
-    bool              exited;
-    void             *ret;
-    CRITICAL_SECTION  cs;
-};
-
-static __thread QemuThreadData *qemu_thread_data;
-
-static unsigned __stdcall win32_start_routine(void *arg)
-{
-    QemuThreadData *data = (QemuThreadData *) arg;
-    void *(*start_routine)(void *) = data->start_routine;
-    void *thread_arg = data->arg;
-
-    if (data->mode == QEMU_THREAD_DETACHED) {
-        g_free(data);
-        data = NULL;
-    }
-    qemu_thread_data = data;
-    qemu_thread_exit(start_routine(thread_arg));
-    abort();
-}
-
-void qemu_thread_exit(void *arg)
-{
-    QemuThreadData *data = qemu_thread_data;
-
-    if (data) {
-        assert(data->mode != QEMU_THREAD_DETACHED);
-        data->ret = arg;
-        EnterCriticalSection(&data->cs);
-        data->exited = true;
-        LeaveCriticalSection(&data->cs);
-    }
-    _endthreadex(0);
-}
-
-void *qemu_thread_join(QemuThread *thread)
-{
-    QemuThreadData *data;
-    void *ret;
-    HANDLE handle;
-
-    data = thread->data;
-    if (!data) {
-        return NULL;
-    }
-    /*
-     * Because multiple copies of the QemuThread can exist via
-     * qemu_thread_get_self, we need to store a value that cannot
-     * leak there.  The simplest, non racy way is to store the TID,
-     * discard the handle that _beginthreadex gives back, and
-     * get another copy of the handle here.
-     */
-    handle = qemu_thread_get_handle(thread);
-    if (handle) {
-        WaitForSingleObject(handle, INFINITE);
-        CloseHandle(handle);
-    }
-    ret = data->ret;
-    assert(data->mode != QEMU_THREAD_DETACHED);
-    DeleteCriticalSection(&data->cs);
-    g_free(data);
-    return ret;
-}
-
-void qemu_thread_create(QemuThread *thread,
-                       void *(*start_routine)(void *),
-                       void *arg, int mode)
-{
-    HANDLE hThread;
-    struct QemuThreadData *data;
-
-    data = g_malloc(sizeof *data);
-    data->start_routine = start_routine;
-    data->arg = arg;
-    data->mode = mode;
-    data->exited = false;
-
-    if (data->mode != QEMU_THREAD_DETACHED) {
-        InitializeCriticalSection(&data->cs);
-    }
-
-    hThread = (HANDLE) _beginthreadex(NULL, 0, win32_start_routine,
-                                      data, 0, &thread->tid);
-    if (!hThread) {
-        error_exit(GetLastError(), __func__);
-    }
-    CloseHandle(hThread);
-    thread->data = (mode == QEMU_THREAD_DETACHED) ? NULL : data;
-}
-
-void qemu_thread_get_self(QemuThread *thread)
-{
-    thread->data = qemu_thread_data;
-    thread->tid = GetCurrentThreadId();
-}
-
-HANDLE qemu_thread_get_handle(QemuThread *thread)
-{
-    QemuThreadData *data;
-    HANDLE handle;
-
-    data = thread->data;
-    if (!data) {
-        return NULL;
-    }
-
-    assert(data->mode != QEMU_THREAD_DETACHED);
-    EnterCriticalSection(&data->cs);
-    if (!data->exited) {
-        handle = OpenThread(SYNCHRONIZE | THREAD_SUSPEND_RESUME, FALSE,
-                            thread->tid);
-    } else {
-        handle = NULL;
-    }
-    LeaveCriticalSection(&data->cs);
-    return handle;
-}
-
-bool qemu_thread_is_self(QemuThread *thread)
-{
-    return GetCurrentThreadId() == thread->tid;
-}