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win32: Switch thread abstraction to us TLS variable internally 

We already depend on working __thread support for coroutines, so this
complication here is no longer needed.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jan Kiszka 2012-11-23 12:12:01 +01:00 committed by Anthony Liguori
parent 57f26ae729
commit 6265e4ff32
1 changed files with 6 additions and 18 deletions
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24
qemu-thread-win32.c
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@ -239,7 +239,7 @@ struct QemuThreadData {
CRITICAL_SECTION cs;
};
static int qemu_thread_tls_index = TLS_OUT_OF_INDEXES;
static __thread QemuThreadData *qemu_thread_data;
static unsigned __stdcall win32_start_routine(void *arg)
{
@ -251,14 +251,15 @@ static unsigned __stdcall win32_start_routine(void *arg)
g_free(data);
data = NULL;
}
TlsSetValue(qemu_thread_tls_index, data);
qemu_thread_data = data;
qemu_thread_exit(start_routine(thread_arg));
abort();
}
void qemu_thread_exit(void *arg)
{
QemuThreadData *data = TlsGetValue(qemu_thread_tls_index);
QemuThreadData *data = qemu_thread_data;
if (data) {
assert(data->mode != QEMU_THREAD_DETACHED);
data->ret = arg;
@ -298,25 +299,13 @@ void *qemu_thread_join(QemuThread *thread)
return ret;
}
static inline void qemu_thread_init(void)
{
if (qemu_thread_tls_index == TLS_OUT_OF_INDEXES) {
qemu_thread_tls_index = TlsAlloc();
if (qemu_thread_tls_index == TLS_OUT_OF_INDEXES) {
error_exit(ERROR_NO_SYSTEM_RESOURCES, __func__);
}
}
}
void qemu_thread_create(QemuThread *thread,
void *(*start_routine)(void *),
void *arg, int mode)
{
HANDLE hThread;
struct QemuThreadData *data;
qemu_thread_init();
data = g_malloc(sizeof *data);
data->start_routine = start_routine;
data->arg = arg;
@ -338,8 +327,7 @@ void qemu_thread_create(QemuThread *thread,
void qemu_thread_get_self(QemuThread *thread)
{
qemu_thread_init();
thread->data = TlsGetValue(qemu_thread_tls_index);
thread->data = qemu_thread_data;
thread->tid = GetCurrentThreadId();
}