/**
* Insert into the hash table. If an entry with this key already exists
* we'll replace the existing entry.
* \param table - the hash table
* \param key - the key (not zero)
* \param data - pointer to user data
*/
void _mesa_HashInsert(struct _mesa_HashTable *table, GLuint key, void *data)
{
/* search for existing entry with this key */
GLuint pos;
struct HashEntry *entry;
assert(table);
assert(key);
_glthread_LOCK_MUTEX(table->Mutex);
if (key > table->MaxKey)
table->MaxKey = key;
pos = key & (TABLE_SIZE-1);
entry = table->Table[pos];
while (entry) {
if (entry->Key == key) {
/* replace entry's data */
entry->Data = data;
_glthread_UNLOCK_MUTEX(table->Mutex);
return;
}
entry = entry->Next;
}
/* alloc and insert new table entry */
entry = MALLOC_STRUCT(HashEntry);
entry->Key = key;
entry->Data = data;
entry->Next = table->Table[pos];
table->Table[pos] = entry;
_glthread_UNLOCK_MUTEX(table->Mutex);
}
/**
* Remove an entry from the hash table.
* \param table - the hash table
* \param key - key of entry to remove
*/
void _mesa_HashRemove(struct _mesa_HashTable *table, GLuint key)
{
GLuint pos;
struct HashEntry *entry, *prev;
assert(table);
assert(key);
_glthread_LOCK_MUTEX(table->Mutex);
pos = key & (TABLE_SIZE-1);
prev = NULL;
entry = table->Table[pos];
while (entry) {
if (entry->Key == key) {
/* found it! */
if (prev) {
prev->Next = entry->Next;
}
else {
table->Table[pos] = entry->Next;
}
FREE(entry);
_glthread_UNLOCK_MUTEX(table->Mutex);
return;
}
prev = entry;
entry = entry->Next;
}
_glthread_UNLOCK_MUTEX(table->Mutex);
}
/**
* Make context 'ctx' share the display lists, textures and programs
* that are associated with 'ctxToShare'.
* Any display lists, textures or programs associated with 'ctx' will
* be deleted if nobody else is sharing them.
*/
GLboolean
_mesa_share_state(GLcontext *ctx, GLcontext *ctxToShare)
{
if (ctx && ctxToShare && ctx->Shared && ctxToShare->Shared) {
struct gl_shared_state *oldSharedState = ctx->Shared;
GLint RefCount;
ctx->Shared = ctxToShare->Shared;
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
ctx->Shared->RefCount++;
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
update_default_objects(ctx);
_glthread_LOCK_MUTEX(oldSharedState->Mutex);
RefCount = --oldSharedState->RefCount;
_glthread_UNLOCK_MUTEX(oldSharedState->Mutex);
if (RefCount == 0) {
_mesa_free_shared_state(ctx, oldSharedState);
}
return GL_TRUE;
}
else {
return GL_FALSE;
}
}
/**
* Set *ptr to point to rb. If *ptr points to another renderbuffer,
* dereference that buffer first. The new renderbuffer's refcount will
* be incremented. The old renderbuffer's refcount will be decremented.
* This is normally only called from the _mesa_reference_renderbuffer() macro
* when there's a real pointer change.
*/
void
_mesa_reference_renderbuffer_(struct gl_renderbuffer **ptr,
struct gl_renderbuffer *rb)
{
if (*ptr) {
/* Unreference the old renderbuffer */
GLboolean deleteFlag = GL_FALSE;
struct gl_renderbuffer *oldRb = *ptr;
_glthread_LOCK_MUTEX(oldRb->Mutex);
ASSERT(oldRb->RefCount > 0);
oldRb->RefCount--;
/*printf("RB DECR %p (%d) to %d\n", (void*) oldRb, oldRb->Name, oldRb->RefCount);*/
deleteFlag = (oldRb->RefCount == 0);
_glthread_UNLOCK_MUTEX(oldRb->Mutex);
if (deleteFlag) {
oldRb->Delete(oldRb);
}
*ptr = NULL;
}
assert(!*ptr);
if (rb) {
/* reference new renderbuffer */
_glthread_LOCK_MUTEX(rb->Mutex);
rb->RefCount++;
/*printf("RB INCR %p (%d) to %d\n", (void*) rb, rb->Name, rb->RefCount);*/
_glthread_UNLOCK_MUTEX(rb->Mutex);
*ptr = rb;
}
}
/**
* Find a block of 'numKeys' adjacent unused hash keys.
* \param table - the hash table
* \param numKeys - number of keys needed
* \return Starting key of free block or 0 if failure
*/
GLuint _mesa_HashFindFreeKeyBlock(struct _mesa_HashTable *table, GLuint numKeys)
{
GLuint maxKey = ~((GLuint) 0);
_glthread_LOCK_MUTEX(table->Mutex);
if (maxKey - numKeys > table->MaxKey) {
/* the quick solution */
_glthread_UNLOCK_MUTEX(table->Mutex);
return table->MaxKey + 1;
}
else {
/* the slow solution */
GLuint freeCount = 0;
GLuint freeStart = 1;
GLuint key;
for (key=1; key!=maxKey; key++) {
if (_mesa_HashLookup(table, key)) {
/* darn, this key is already in use */
freeCount = 0;
freeStart = key+1;
}
else {
/* this key not in use, check if we've found enough */
freeCount++;
if (freeCount == numKeys) {
_glthread_UNLOCK_MUTEX(table->Mutex);
return freeStart;
}
}
}
/* cannot allocate a block of numKeys consecutive keys */
_glthread_UNLOCK_MUTEX(table->Mutex);
return 0;
}
}
/**
* Set *ptr to point to fb, with refcounting and locking.
* This is normally only called from the _mesa_reference_framebuffer() macro
* when there's a real pointer change.
*/
void
_mesa_reference_framebuffer_(struct gl_framebuffer **ptr,
struct gl_framebuffer *fb)
{
if (*ptr) {
/* unreference old renderbuffer */
GLboolean deleteFlag = GL_FALSE;
struct gl_framebuffer *oldFb = *ptr;
_glthread_LOCK_MUTEX(oldFb->Mutex);
ASSERT(oldFb->RefCount > 0);
oldFb->RefCount--;
deleteFlag = (oldFb->RefCount == 0);
_glthread_UNLOCK_MUTEX(oldFb->Mutex);
if (deleteFlag)
oldFb->Delete(oldFb);
*ptr = NULL;
}
assert(!*ptr);
if (fb) {
_glthread_LOCK_MUTEX(fb->Mutex);
fb->RefCount++;
_glthread_UNLOCK_MUTEX(fb->Mutex);
*ptr = fb;
}
}
/**
* Set ptr to bufObj w/ reference counting.
* This is normally only called from the _mesa_reference_buffer_object() macro
* when there's a real pointer change.
*/
void
_mesa_reference_buffer_object_(struct gl_context *ctx,
struct gl_buffer_object **ptr,
struct gl_buffer_object *bufObj)
{
if (*ptr) {
/* Unreference the old buffer */
GLboolean deleteFlag = GL_FALSE;
struct gl_buffer_object *oldObj = *ptr;
_glthread_LOCK_MUTEX(oldObj->Mutex);
ASSERT(oldObj->RefCount > 0);
oldObj->RefCount--;
#if 0
printf("BufferObj %p %d DECR to %d\n",
(void *) oldObj, oldObj->Name, oldObj->RefCount);
#endif
deleteFlag = (oldObj->RefCount == 0);
_glthread_UNLOCK_MUTEX(oldObj->Mutex);
if (deleteFlag) {
/* some sanity checking: don't delete a buffer still in use */
#if 0
/* unfortunately, these tests are invalid during context tear-down */
ASSERT(ctx->Array.ArrayBufferObj != bufObj);
ASSERT(ctx->Array.ArrayObj->ElementArrayBufferObj != bufObj);
ASSERT(ctx->Array.ArrayObj->Vertex.BufferObj != bufObj);
#endif
ASSERT(ctx->Driver.DeleteBuffer);
ctx->Driver.DeleteBuffer(ctx, oldObj);
}
*ptr = NULL;
}
ASSERT(!*ptr);
if (bufObj) {
/* reference new buffer */
_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. */
_mesa_problem(NULL, "referencing deleted buffer object");
*ptr = NULL;
}
else {
bufObj->RefCount++;
#if 0
printf("BufferObj %p %d INCR to %d\n",
(void *) bufObj, bufObj->Name, bufObj->RefCount);
#endif
*ptr = bufObj;
}
_glthread_UNLOCK_MUTEX(bufObj->Mutex);
}
}
/**
* Set ptr to arrayObj w/ reference counting.
*/
void
_mesa_reference_array_object(struct gl_context *ctx,
struct gl_array_object **ptr,
struct gl_array_object *arrayObj)
{
if (*ptr == arrayObj)
return;
if (*ptr) {
/* Unreference the old array object */
GLboolean deleteFlag = GL_FALSE;
struct gl_array_object *oldObj = *ptr;
_glthread_LOCK_MUTEX(oldObj->Mutex);
ASSERT(oldObj->RefCount > 0);
oldObj->RefCount--;
#if 0
printf("ArrayObj %p %d DECR to %d\n",
(void *) oldObj, oldObj->Name, oldObj->RefCount);
#endif
deleteFlag = (oldObj->RefCount == 0);
_glthread_UNLOCK_MUTEX(oldObj->Mutex);
if (deleteFlag) {
ASSERT(ctx->Driver.DeleteArrayObject);
ctx->Driver.DeleteArrayObject(ctx, oldObj);
}
*ptr = NULL;
}
ASSERT(!*ptr);
if (arrayObj) {
/* reference new array object */
_glthread_LOCK_MUTEX(arrayObj->Mutex);
if (arrayObj->RefCount == 0) {
/* this array's being deleted (look just above) */
/* Not sure this can every really happen. Warn if it does. */
_mesa_problem(NULL, "referencing deleted array object");
*ptr = NULL;
}
else {
arrayObj->RefCount++;
#if 0
printf("ArrayObj %p %d INCR to %d\n",
(void *) arrayObj, arrayObj->Name, arrayObj->RefCount);
#endif
*ptr = arrayObj;
}
_glthread_UNLOCK_MUTEX(arrayObj->Mutex);
}
}
void
_mesa_unref_sync_object(GLcontext *ctx, struct gl_sync_object *syncObj)
{
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
syncObj->RefCount--;
if (syncObj->RefCount == 0) {
remove_from_list(& syncObj->link);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
ctx->Driver.DeleteSyncObject(ctx, syncObj);
} else {
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
}
/**
* Reference (or unreference) a texture object.
* If '*ptr', decrement *ptr's refcount (and delete if it becomes zero).
* If 'tex' is non-null, increment its refcount.
* This is normally only called from the _mesa_reference_texobj() macro
* when there's a real pointer change.
*/
void
_mesa_reference_texobj_(struct gl_texture_object **ptr,
struct gl_texture_object *tex)
{
assert(ptr);
if (*ptr) {
/* Unreference the old texture */
GLboolean deleteFlag = GL_FALSE;
struct gl_texture_object *oldTex = *ptr;
ASSERT(valid_texture_object(oldTex));
(void) valid_texture_object; /* silence warning in release builds */
_glthread_LOCK_MUTEX(oldTex->Mutex);
ASSERT(oldTex->RefCount > 0);
oldTex->RefCount--;
deleteFlag = (oldTex->RefCount == 0);
_glthread_UNLOCK_MUTEX(oldTex->Mutex);
if (deleteFlag) {
GET_CURRENT_CONTEXT(ctx);
if (ctx)
ctx->Driver.DeleteTexture(ctx, oldTex);
else
_mesa_problem(NULL, "Unable to delete texture, no context");
}
*ptr = NULL;
}
assert(!*ptr);
if (tex) {
/* reference new texture */
ASSERT(valid_texture_object(tex));
_glthread_LOCK_MUTEX(tex->Mutex);
if (tex->RefCount == 0) {
/* this texture's being deleted (look just above) */
/* Not sure this can every really happen. Warn if it does. */
_mesa_problem(NULL, "referencing deleted texture object");
*ptr = NULL;
}
else {
tex->RefCount++;
*ptr = tex;
}
_glthread_UNLOCK_MUTEX(tex->Mutex);
}
}
/**
* Get the key of the "first" entry in the hash table.
* This is used in the course of deleting all display lists when
* a context is destroyed.
* \param table - the hash table
* \return key for the "first" entry in the hash table.
*/
GLuint _mesa_HashFirstEntry(struct _mesa_HashTable *table)
{
GLuint pos;
assert(table);
_glthread_LOCK_MUTEX(table->Mutex);
for (pos=0; pos < TABLE_SIZE; pos++) {
if (table->Table[pos]) {
_glthread_UNLOCK_MUTEX(table->Mutex);
return table->Table[pos]->Key;
}
}
_glthread_UNLOCK_MUTEX(table->Mutex);
return 0;
}
void GLAPIENTRY
_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
return;
}
if (!renderbuffers)
return;
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
for (i = 0; i < n; i++) {
GLuint name = first + i;
renderbuffers[i] = name;
/* insert dummy placeholder into hash table */
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
}
/*
* Allocate and initialize a new MemRange struct.
* Try to allocate it from the pool of free MemRange nodes rather than malloc.
*/
static tdfxMemRange *
NewRangeNode(tdfxContextPtr fxMesa, FxU32 start, FxU32 end)
{
struct gl_shared_state *mesaShared = fxMesa->glCtx->Shared;
struct tdfxSharedState *shared = (struct tdfxSharedState *) mesaShared->DriverData;
tdfxMemRange *result;
_glthread_LOCK_MUTEX(mesaShared->Mutex);
if (shared && shared->tmPool) {
result = shared->tmPool;
shared->tmPool = shared->tmPool->next;
}
else {
result = MALLOC(sizeof(tdfxMemRange));
}
_glthread_UNLOCK_MUTEX(mesaShared->Mutex);
if (!result) {
/*fprintf(stderr, "fxDriver: out of memory!\n");*/
return NULL;
}
result->startAddr = start;
result->endAddr = end;
result->next = NULL;
return result;
}
void
_mesa_ref_sync_object(GLcontext *ctx, struct gl_sync_object *syncObj)
{
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
syncObj->RefCount++;
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
/**
* Remove the given texture object from the texture object pool.
* Do not deallocate the texture object though.
*/
void
_mesa_remove_texture_object( GLcontext *ctx, struct gl_texture_object *texObj )
{
struct gl_texture_object *tprev, *tcurr;
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
/* unlink from the linked list */
tprev = NULL;
tcurr = ctx->Shared->TexObjectList;
while (tcurr) {
if (tcurr == texObj) {
if (tprev) {
tprev->Next = texObj->Next;
}
else {
ctx->Shared->TexObjectList = texObj->Next;
}
break;
}
tprev = tcurr;
tcurr = tcurr->Next;
}
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
if (texObj->Name > 0) {
/* remove from hash table */
_mesa_HashRemove(ctx->Shared->TexObjects, texObj->Name);
}
}
void *
_mesa_exec_malloc(GLuint size)
{
struct mem_block *block = NULL;
void *addr = NULL;
_glthread_LOCK_MUTEX(exec_mutex);
if (!init_heap())
goto bail;
if (exec_heap) {
size = (size + 31) & ~31;
block = mmAllocMem( exec_heap, size, 32, 0 );
}
if (block)
addr = exec_mem + block->ofs;
else
printf("_mesa_exec_malloc failed\n");
bail:
_glthread_UNLOCK_MUTEX(exec_mutex);
return addr;
}
/* Combine */
prev->endAddr = range->endAddr;
prev->next = range->next;
DELETE_RANGE_NODE(shared, range);
}
else {
prev->next = range;
}
}
else {
shared->tmFree[tmu] = range;
}
}
#if 0 /* NOT USED */
static void
RemoveRange(tdfxContextPtr fxMesa, FxU32 tmu, tdfxMemRange *range)
{
struct gl_shared_state *mesaShared = fxMesa->glCtx->Shared;
_glthread_LOCK_MUTEX(mesaShared->Mutex);
RemoveRange_NoLock(fxMesa, tmu, range);
_glthread_UNLOCK_MUTEX(mesaShared->Mutex);
}
/**
* Generate texture names.
*
* \param n number of texture names to be generated.
* \param textures an array in which will hold the generated texture names.
*
* \sa glGenTextures().
*
* While holding the GenTexturesLock lock, calls _mesa_HashFindFreeKeyBlock()
* to find a block of free texture IDs which are stored in \p textures.
* Corresponding empty texture objects are also generated.
*/
void GLAPIENTRY
_mesa_GenTextures( GLsizei n, GLuint *textures )
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glGenTextures" );
return;
}
if (!textures)
return;
/*
* This must be atomic (generation and allocation of texture IDs)
*/
_glthread_LOCK_MUTEX(GenTexturesLock);
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->TexObjects, n);
/* Allocate new, empty texture objects */
for (i = 0; i < n; i++) {
struct gl_texture_object *texObj;
GLuint name = first + i;
GLenum target = 0;
texObj = (*ctx->Driver.NewTextureObject)( ctx, name, target);
if (!texObj) {
_glthread_UNLOCK_MUTEX(GenTexturesLock);
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTextures");
return;
}
/* insert into hash table */
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashInsert(ctx->Shared->TexObjects, texObj->Name, texObj);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
textures[i] = name;
}
_glthread_UNLOCK_MUTEX(GenTexturesLock);
}
/**
* Delete a set of buffer objects.
*
* \param n Number of buffer objects to delete.
* \param ids Array of \c n buffer object IDs.
*/
void GLAPIENTRY
_mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
{
GET_CURRENT_CONTEXT(ctx);
GLsizei i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
FLUSH_VERTICES(ctx, 0);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteBuffersARB(n)");
return;
}
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
for (i = 0; i < n; i++) {
struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, ids[i]);
if (bufObj) {
GLuint j;
ASSERT(bufObj->Name == ids[i] || bufObj == &DummyBufferObject);
if (_mesa_bufferobj_mapped(bufObj)) {
/* if mapped, unmap it now */
ctx->Driver.UnmapBuffer(ctx, bufObj);
bufObj->AccessFlags = default_access_mode(ctx);
bufObj->Pointer = NULL;
}
/* unbind any vertex pointers bound to this buffer */
for (j = 0; j < Elements(ctx->Array.VertexAttrib); j++) {
unbind(ctx, &ctx->Array.VertexAttrib[j].BufferObj, bufObj);
}
if (ctx->Array.ElementArrayBufferObj == bufObj) {
_mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
}
/* The ID is immediately freed for re-use */
_mesa_HashRemove(ctx->Shared->BufferObjects, ids[i]);
/* Make sure we do not run into the classic ABA problem on bind.
* We don't want to allow re-binding a buffer object that's been
* "deleted" by glDeleteBuffers().
*
* The explicit rebinding to the default object in the current context
* prevents the above in the current context, but another context
* sharing the same objects might suffer from this problem.
* The alternative would be to do the hash lookup in any case on bind
* which would introduce more runtime overhead than this.
*/
bufObj->DeletePending = GL_TRUE;
_mesa_reference_buffer_object(ctx, &bufObj, NULL);
}
}
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
/**
* Delete a set of array objects.
*
* \param n Number of array objects to delete.
* \param ids Array of \c n array object IDs.
*/
void GLAPIENTRY
_mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids)
{
GET_CURRENT_CONTEXT(ctx);
GLsizei i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteVertexArrayAPPLE(n)");
return;
}
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
for (i = 0; i < n; i++) {
struct gl_array_object *obj = lookup_arrayobj(ctx, ids[i]);
if ( obj != NULL ) {
ASSERT( obj->Name == ids[i] );
/* If the array object is currently bound, the spec says "the binding
* for that object reverts to zero and the default vertex array
* becomes current."
*/
if ( obj == ctx->Array.ArrayObj ) {
CALL_BindVertexArrayAPPLE( ctx->Exec, (0) );
}
#if FEATURE_ARB_vertex_buffer_object
/* Unbind any buffer objects that might be bound to arrays in
* this array object.
*/
unbind_buffer_object( ctx, obj->Vertex.BufferObj );
unbind_buffer_object( ctx, obj->Normal.BufferObj );
unbind_buffer_object( ctx, obj->Color.BufferObj );
unbind_buffer_object( ctx, obj->SecondaryColor.BufferObj );
unbind_buffer_object( ctx, obj->FogCoord.BufferObj );
unbind_buffer_object( ctx, obj->Index.BufferObj );
for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
unbind_buffer_object( ctx, obj->TexCoord[i].BufferObj );
}
unbind_buffer_object( ctx, obj->EdgeFlag.BufferObj );
for (i = 0; i < VERT_ATTRIB_MAX; i++) {
unbind_buffer_object( ctx, obj->VertexAttrib[i].BufferObj );
}
#endif
/* The ID is immediately freed for re-use */
_mesa_remove_array_object(ctx, obj);
ctx->Driver.DeleteArrayObject(ctx, obj);
}
}
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
/**
* Insert a key/pointer pair into the hash table.
* If an entry with this key already exists we'll replace the existing entry.
*
* \param table the hash table.
* \param key the key (not zero).
* \param data pointer to user data.
*/
void
_mesa_HashInsert(struct _mesa_HashTable *table, GLuint key, void *data)
{
/* search for existing entry with this key */
GLuint pos;
struct HashEntry *entry;
assert(table);
assert(key);
_glthread_LOCK_MUTEX(table->Mutex);
if (key > table->MaxKey)
table->MaxKey = key;
pos = HASH_FUNC(key);
/* check if replacing an existing entry with same key */
for (entry = table->Table[pos]; entry; entry = entry->Next) {
if (entry->Key == key) {
/* replace entry's data */
#if 0 /* not sure this check is always valid */
if (entry->Data) {
_mesa_problem(NULL, "Memory leak detected in _mesa_HashInsert");
}
#endif
entry->Data = data;
_glthread_UNLOCK_MUTEX(table->Mutex);
return;
}
}
/* alloc and insert new table entry */
entry = MALLOC_STRUCT(HashEntry);
if (entry) {
entry->Key = key;
entry->Data = data;
entry->Next = table->Table[pos];
table->Table[pos] = entry;
}
_glthread_UNLOCK_MUTEX(table->Mutex);
}
static void
finish_or_flush( struct gl_context *ctx )
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
if (xmesa) {
_glthread_LOCK_MUTEX(_xmesa_lock);
XSync( xmesa->display, False );
_glthread_UNLOCK_MUTEX(_xmesa_lock);
}
}
/**
* Lookup an entry in the hash table.
*
* \param table the hash table.
* \param key the key.
*
* \return pointer to user's data or NULL if key not in table
*/
void *
_mesa_HashLookup(struct _mesa_HashTable *table, GLuint key)
{
void *res;
assert(table);
_glthread_LOCK_MUTEX(table->Mutex);
res = _mesa_HashLookup_unlocked(table, key);
_glthread_UNLOCK_MUTEX(table->Mutex);
return res;
}
void
_mesa_unref_sync_object(struct gl_context *ctx, struct gl_sync_object *syncObj)
{
struct set_entry *entry;
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
syncObj->RefCount--;
if (syncObj->RefCount == 0) {
entry = _mesa_set_search(ctx->Shared->SyncObjects,
_mesa_hash_pointer(syncObj),
syncObj);
assert (entry != NULL);
_mesa_set_remove(ctx->Shared->SyncObjects, entry);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
ctx->Driver.DeleteSyncObject(ctx, syncObj);
} else {
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
}
/**
* Generate a set of unique array object IDs and store them in \c arrays.
*
* \param n Number of IDs to generate.
* \param arrays Array of \c n locations to store the IDs.
*/
void GLAPIENTRY
_mesa_GenVertexArraysAPPLE(GLsizei n, GLuint *arrays)
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenVertexArraysAPPLE");
return;
}
if (!arrays) {
return;
}
/*
* This must be atomic (generation and allocation of array object IDs)
*/
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->ArrayObjects, n);
/* Allocate new, empty array objects and return identifiers */
for (i = 0; i < n; i++) {
struct gl_array_object *obj;
GLuint name = first + i;
obj = (*ctx->Driver.NewArrayObject)( ctx, name );
if (!obj) {
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenVertexArraysAPPLE");
return;
}
_mesa_save_array_object(ctx, obj);
arrays[i] = first + i;
}
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
/**
* Generate a set of unique buffer object IDs and store them in \c buffer.
*
* \param n Number of IDs to generate.
* \param buffer Array of \c n locations to store the IDs.
*/
void GLAPIENTRY
_mesa_GenBuffersARB(GLsizei n, GLuint *buffer)
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenBuffersARB");
return;
}
if (!buffer) {
return;
}
/*
* This must be atomic (generation and allocation of buffer object IDs)
*/
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->BufferObjects, n);
/* Allocate new, empty buffer objects and return identifiers */
for (i = 0; i < n; i++) {
struct gl_buffer_object *bufObj;
GLuint name = first + i;
GLenum target = 0;
bufObj = ctx->Driver.NewBufferObject( ctx, name, target );
if (!bufObj) {
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenBuffersARB");
return;
}
_mesa_HashInsert(ctx->Shared->BufferObjects, first + i, bufObj);
buffer[i] = first + i;
}
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
/**
* Remove an entry from the hash table.
*
* \param table the hash table.
* \param key key of entry to remove.
*
* While holding the hash table's lock, searches the entry with the matching
* key and unlinks it.
*/
void
_mesa_HashRemove(struct _mesa_HashTable *table, GLuint key)
{
GLuint pos;
struct HashEntry *entry, *prev;
assert(table);
assert(key);
/* have to check this outside of mutex lock */
if (table->InDeleteAll) {
_mesa_problem(NULL, "_mesa_HashRemove illegally called from "
"_mesa_HashDeleteAll callback function");
return;
}
_glthread_LOCK_MUTEX(table->Mutex);
pos = HASH_FUNC(key);
prev = NULL;
entry = table->Table[pos];
while (entry) {
if (entry->Key == key) {
/* found it! */
if (prev) {
prev->Next = entry->Next;
}
else {
table->Table[pos] = entry->Next;
}
free(entry);
_glthread_UNLOCK_MUTEX(table->Mutex);
return;
}
prev = entry;
entry = entry->Next;
}
_glthread_UNLOCK_MUTEX(table->Mutex);
}
/**
* Delete named textures.
*
* \param n number of textures to be deleted.
* \param textures array of texture IDs to be deleted.
*
* \sa glDeleteTextures().
*
* If we're about to delete a texture that's currently bound to any
* texture unit, unbind the texture first. Decrement the reference
* count on the texture object and delete it if it's zero.
* Recall that texture objects can be shared among several rendering
* contexts.
*/
void GLAPIENTRY
_mesa_DeleteTextures( GLsizei n, const GLuint *textures)
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glDeleteTextures %d\n", n);
FLUSH_VERTICES(ctx, 0); /* too complex */
if (!textures)
return;
for (i = 0; i < n; i++) {
if (textures[i] > 0) {
struct gl_texture_object *delObj
= _mesa_lookup_texture(ctx, textures[i]);
if (delObj) {
_mesa_lock_texture(ctx, delObj);
/* Check if texture is bound to any framebuffer objects.
* If so, unbind.
* See section 4.4.2.3 of GL_EXT_framebuffer_object.
*/
unbind_texobj_from_fbo(ctx, delObj);
/* Check if this texture is currently bound to any texture units.
* If so, unbind it.
*/
unbind_texobj_from_texunits(ctx, delObj);
_mesa_unlock_texture(ctx, delObj);
ctx->NewState |= _NEW_TEXTURE;
/* The texture _name_ is now free for re-use.
* Remove it from the hash table now.
*/
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashRemove(ctx->Shared->TexObjects, delObj->Name);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
/* Unreference the texobj. If refcount hits zero, the texture
* will be deleted.
*/
_mesa_reference_texobj(&delObj, NULL);
}
}
}
}
/**
* Determine if ID is the name of a buffer object.
*
* \param id ID of the potential buffer object.
* \return \c GL_TRUE if \c id is the name of a buffer object,
* \c GL_FALSE otherwise.
*/
GLboolean GLAPIENTRY
_mesa_IsBufferARB(GLuint id)
{
struct gl_buffer_object *bufObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
bufObj = _mesa_lookup_bufferobj(ctx, id);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
return bufObj ? GL_TRUE : GL_FALSE;
}
/**
* Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR.
* \return current context status
*/
GLenum GLAPIENTRY
_mesa_GetGraphicsResetStatusARB( void )
{
GET_CURRENT_CONTEXT(ctx);
GLenum status = GL_NO_ERROR;
/* The ARB_robustness specification says:
*
* "If the reset notification behavior is NO_RESET_NOTIFICATION_ARB,
* then the implementation will never deliver notification of reset
* events, and GetGraphicsResetStatusARB will always return NO_ERROR."
*/
if (ctx->Const.ResetStrategy == GL_NO_RESET_NOTIFICATION_ARB) {
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx,
"glGetGraphicsResetStatusARB always returns GL_NO_ERROR "
"because reset notifictation was not requested at context "
"creation.\n");
return GL_NO_ERROR;
}
if (ctx->Driver.GetGraphicsResetStatus) {
/* Query the reset status of this context from the driver core.
*/
status = ctx->Driver.GetGraphicsResetStatus(ctx);
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
/* If this context has not been affected by a GPU reset, check to see if
* some other context in the share group has been affected by a reset.
* If another context saw a reset but this context did not, assume that
* this context was not guilty.
*/
if (status != GL_NO_ERROR) {
ctx->Shared->ShareGroupReset = true;
} else if (ctx->Shared->ShareGroupReset && !ctx->ShareGroupReset) {
status = GL_INNOCENT_CONTEXT_RESET_ARB;
}
ctx->ShareGroupReset = ctx->Shared->ShareGroupReset;
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
if (!ctx->Driver.GetGraphicsResetStatus && (MESA_VERBOSE & VERBOSE_API))
_mesa_debug(ctx,
"glGetGraphicsResetStatusARB always returns GL_NO_ERROR "
"because the driver doesn't track reset status.\n");
return status;
}
