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mesa: Protect buffer objects reference counting with a mutex.

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This commit is contained in:
Michal Krol 2010-02-08 19:43:42 +01:00
parent 829d9bb733
commit eeec2c3d95
2 changed files with 7 additions and 4 deletions
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10
src/mesa/main/bufferobj.c
View file

@ -214,6 +214,7 @@ _mesa_delete_buffer_object( GLcontext *ctx, struct gl_buffer_object *bufObj )
bufObj->RefCount = -1000;
bufObj->Name = ~0;
_glthread_DESTROY_MUTEX(bufObj->Mutex);
_mesa_free(bufObj);
}
@ -235,7 +236,7 @@ _mesa_reference_buffer_object(GLcontext *ctx,
GLboolean deleteFlag = GL_FALSE;
struct gl_buffer_object *oldObj = *ptr;
/*_glthread_LOCK_MUTEX(oldObj->Mutex);*/
_glthread_LOCK_MUTEX(oldObj->Mutex);
ASSERT(oldObj->RefCount > 0);
oldObj->RefCount--;
#if 0
@ -243,7 +244,7 @@ _mesa_reference_buffer_object(GLcontext *ctx,
(void *) oldObj, oldObj->Name, oldObj->RefCount);
#endif
deleteFlag = (oldObj->RefCount == 0);
/*_glthread_UNLOCK_MUTEX(oldObj->Mutex);*/
_glthread_UNLOCK_MUTEX(oldObj->Mutex);
if (deleteFlag) {
@ -265,7 +266,7 @@ _mesa_reference_buffer_object(GLcontext *ctx,
if (bufObj) {
/* reference new buffer */
/*_glthread_LOCK_MUTEX(tex->Mutex);*/
_glthread_LOCK_MUTEX(bufObj->Mutex);
if (bufObj->RefCount == 0) {
/* this buffer's being deleted (look just above) */
/* Not sure this can every really happen. Warn if it does. */
@ -280,7 +281,7 @@ _mesa_reference_buffer_object(GLcontext *ctx,
#endif
*ptr = bufObj;
}
/*_glthread_UNLOCK_MUTEX(tex->Mutex);*/
_glthread_UNLOCK_MUTEX(bufObj->Mutex);
}
}
@ -295,6 +296,7 @@ _mesa_initialize_buffer_object( struct gl_buffer_object *obj,
(void) target;
_mesa_bzero(obj, sizeof(struct gl_buffer_object));
_glthread_INIT_MUTEX(obj->Mutex);
obj->RefCount = 1;
obj->Name = name;
obj->Usage = GL_STATIC_DRAW_ARB;

1
src/mesa/main/mtypes.h
View file

@ -1426,6 +1426,7 @@ struct gl_viewport_attrib
*/
struct gl_buffer_object
{
_glthread_Mutex Mutex;
GLint RefCount;
GLuint Name;
GLenum Usage; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */