0,0 → 1,424 |
/* |
* Copyright © 2009 Intel Corporation |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the "Software"), |
* to deal in the Software without restriction, including without limitation |
* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
* and/or sell copies of the Software, and to permit persons to whom the |
* Software is furnished to do so, subject to the following conditions: |
* |
* The above copyright notice and this permission notice (including the next |
* paragraph) shall be included in all copies or substantial portions of the |
* Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
* DEALINGS IN THE SOFTWARE. |
*/ |
|
/** |
* \file syncobj.c |
* Sync object management. |
* |
* Unlike textures and other objects that are shared between contexts, sync |
* objects are not bound to the context. As a result, the reference counting |
* and delete behavior of sync objects is slightly different. References to |
* sync objects are added: |
* |
* - By \c glFencSynce. This sets the initial reference count to 1. |
* - At the start of \c glClientWaitSync. The reference is held for the |
* duration of the wait call. |
* |
* References are removed: |
* |
* - By \c glDeleteSync. |
* - At the end of \c glClientWaitSync. |
* |
* Additionally, drivers may call \c _mesa_ref_sync_object and |
* \c _mesa_unref_sync_object as needed to implement \c ServerWaitSync. |
* |
* As with shader objects, sync object names become invalid as soon as |
* \c glDeleteSync is called. For this reason \c glDeleteSync sets the |
* \c DeletePending flag. All functions validate object handles by testing |
* this flag. |
* |
* \note |
* Only \c GL_ARB_sync objects are shared between contexts. If support is ever |
* added for either \c GL_NV_fence or \c GL_APPLE_fence different semantics |
* will need to be implemented. |
* |
* \author Ian Romanick <ian.d.romanick@intel.com> |
*/ |
|
#include <inttypes.h> |
#include "glheader.h" |
#include "imports.h" |
#include "context.h" |
#include "macros.h" |
#include "get.h" |
#include "dispatch.h" |
#include "mtypes.h" |
#include "util/hash_table.h" |
#include "util/set.h" |
|
#include "syncobj.h" |
|
static struct gl_sync_object * |
_mesa_new_sync_object(struct gl_context *ctx, GLenum type) |
{ |
struct gl_sync_object *s = CALLOC_STRUCT(gl_sync_object); |
(void) ctx; |
(void) type; |
|
return s; |
} |
|
|
static void |
_mesa_delete_sync_object(struct gl_context *ctx, struct gl_sync_object *syncObj) |
{ |
(void) ctx; |
free(syncObj->Label); |
free(syncObj); |
} |
|
|
static void |
_mesa_fence_sync(struct gl_context *ctx, struct gl_sync_object *syncObj, |
GLenum condition, GLbitfield flags) |
{ |
(void) ctx; |
(void) condition; |
(void) flags; |
|
syncObj->StatusFlag = 1; |
} |
|
|
static void |
_mesa_check_sync(struct gl_context *ctx, struct gl_sync_object *syncObj) |
{ |
(void) ctx; |
(void) syncObj; |
|
/* No-op for software rendering. Hardware drivers will need to determine |
* whether the state of the sync object has changed. |
*/ |
} |
|
|
static void |
_mesa_wait_sync(struct gl_context *ctx, struct gl_sync_object *syncObj, |
GLbitfield flags, GLuint64 timeout) |
{ |
(void) ctx; |
(void) syncObj; |
(void) flags; |
(void) timeout; |
|
/* No-op for software rendering. Hardware drivers will need to wait until |
* the state of the sync object changes or the timeout expires. |
*/ |
} |
|
|
void |
_mesa_init_sync_object_functions(struct dd_function_table *driver) |
{ |
driver->NewSyncObject = _mesa_new_sync_object; |
driver->FenceSync = _mesa_fence_sync; |
driver->DeleteSyncObject = _mesa_delete_sync_object; |
driver->CheckSync = _mesa_check_sync; |
|
/* Use the same no-op wait function for both. |
*/ |
driver->ClientWaitSync = _mesa_wait_sync; |
driver->ServerWaitSync = _mesa_wait_sync; |
} |
|
/** |
* Allocate/init the context state related to sync objects. |
*/ |
void |
_mesa_init_sync(struct gl_context *ctx) |
{ |
(void) ctx; |
} |
|
|
/** |
* Free the context state related to sync objects. |
*/ |
void |
_mesa_free_sync_data(struct gl_context *ctx) |
{ |
(void) ctx; |
} |
|
|
/** |
* Check if the given sync object is: |
* - non-null |
* - not in sync objects hash table |
* - type is GL_SYNC_FENCE |
* - not marked as deleted |
*/ |
bool |
_mesa_validate_sync(struct gl_context *ctx, |
const struct gl_sync_object *syncObj) |
{ |
return (syncObj != NULL) |
&& _mesa_set_search(ctx->Shared->SyncObjects, syncObj) != NULL |
&& (syncObj->Type == GL_SYNC_FENCE) |
&& !syncObj->DeletePending; |
} |
|
|
void |
_mesa_ref_sync_object(struct gl_context *ctx, struct gl_sync_object *syncObj) |
{ |
mtx_lock(&ctx->Shared->Mutex); |
syncObj->RefCount++; |
mtx_unlock(&ctx->Shared->Mutex); |
} |
|
|
void |
_mesa_unref_sync_object(struct gl_context *ctx, struct gl_sync_object *syncObj) |
{ |
struct set_entry *entry; |
|
mtx_lock(&ctx->Shared->Mutex); |
syncObj->RefCount--; |
if (syncObj->RefCount == 0) { |
entry = _mesa_set_search(ctx->Shared->SyncObjects, syncObj); |
assert (entry != NULL); |
_mesa_set_remove(ctx->Shared->SyncObjects, entry); |
mtx_unlock(&ctx->Shared->Mutex); |
|
ctx->Driver.DeleteSyncObject(ctx, syncObj); |
} else { |
mtx_unlock(&ctx->Shared->Mutex); |
} |
} |
|
|
GLboolean GLAPIENTRY |
_mesa_IsSync(GLsync sync) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_sync_object *const syncObj = (struct gl_sync_object *) sync; |
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); |
|
return _mesa_validate_sync(ctx, syncObj) ? GL_TRUE : GL_FALSE; |
} |
|
|
void GLAPIENTRY |
_mesa_DeleteSync(GLsync sync) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_sync_object *const syncObj = (struct gl_sync_object *) sync; |
|
/* From the GL_ARB_sync spec: |
* |
* DeleteSync will silently ignore a <sync> value of zero. An |
* INVALID_VALUE error is generated if <sync> is neither zero nor the |
* name of a sync object. |
*/ |
if (sync == 0) { |
return; |
} |
|
if (!_mesa_validate_sync(ctx, syncObj)) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteSync (not a valid sync object)"); |
return; |
} |
|
/* If there are no client-waits or server-waits pending on this sync, delete |
* the underlying object. |
*/ |
syncObj->DeletePending = GL_TRUE; |
_mesa_unref_sync_object(ctx, syncObj); |
} |
|
|
GLsync GLAPIENTRY |
_mesa_FenceSync(GLenum condition, GLbitfield flags) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_sync_object *syncObj; |
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); |
|
if (condition != GL_SYNC_GPU_COMMANDS_COMPLETE) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glFenceSync(condition=0x%x)", |
condition); |
return 0; |
} |
|
if (flags != 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glFenceSync(flags=0x%x)", |
condition); |
return 0; |
} |
|
syncObj = ctx->Driver.NewSyncObject(ctx, GL_SYNC_FENCE); |
if (syncObj != NULL) { |
syncObj->Type = GL_SYNC_FENCE; |
/* The name is not currently used, and it is never visible to |
* applications. If sync support is extended to provide support for |
* NV_fence, this field will be used. We'll also need to add an object |
* ID hashtable. |
*/ |
syncObj->Name = 1; |
syncObj->RefCount = 1; |
syncObj->DeletePending = GL_FALSE; |
syncObj->SyncCondition = condition; |
syncObj->Flags = flags; |
syncObj->StatusFlag = 0; |
|
ctx->Driver.FenceSync(ctx, syncObj, condition, flags); |
|
mtx_lock(&ctx->Shared->Mutex); |
_mesa_set_add(ctx->Shared->SyncObjects, syncObj); |
mtx_unlock(&ctx->Shared->Mutex); |
|
return (GLsync) syncObj; |
} |
|
return NULL; |
} |
|
|
GLenum GLAPIENTRY |
_mesa_ClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_sync_object *const syncObj = (struct gl_sync_object *) sync; |
GLenum ret; |
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_WAIT_FAILED); |
|
if (!_mesa_validate_sync(ctx, syncObj)) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glClientWaitSync (not a valid sync object)"); |
return GL_WAIT_FAILED; |
} |
|
if ((flags & ~GL_SYNC_FLUSH_COMMANDS_BIT) != 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glClientWaitSync(flags=0x%x)", flags); |
return GL_WAIT_FAILED; |
} |
|
_mesa_ref_sync_object(ctx, syncObj); |
|
/* From the GL_ARB_sync spec: |
* |
* ClientWaitSync returns one of four status values. A return value of |
* ALREADY_SIGNALED indicates that <sync> was signaled at the time |
* ClientWaitSync was called. ALREADY_SIGNALED will always be returned |
* if <sync> was signaled, even if the value of <timeout> is zero. |
*/ |
ctx->Driver.CheckSync(ctx, syncObj); |
if (syncObj->StatusFlag) { |
ret = GL_ALREADY_SIGNALED; |
} else { |
if (timeout == 0) { |
ret = GL_TIMEOUT_EXPIRED; |
} else { |
ctx->Driver.ClientWaitSync(ctx, syncObj, flags, timeout); |
|
ret = syncObj->StatusFlag ? GL_CONDITION_SATISFIED : GL_TIMEOUT_EXPIRED; |
} |
} |
|
_mesa_unref_sync_object(ctx, syncObj); |
return ret; |
} |
|
|
void GLAPIENTRY |
_mesa_WaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_sync_object *const syncObj = (struct gl_sync_object *) sync; |
|
if (!_mesa_validate_sync(ctx, syncObj)) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glWaitSync (not a valid sync object)"); |
return; |
} |
|
if (flags != 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glWaitSync(flags=0x%x)", flags); |
return; |
} |
|
if (timeout != GL_TIMEOUT_IGNORED) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glWaitSync(timeout=0x%" PRIx64 ")", |
(uint64_t) timeout); |
return; |
} |
|
ctx->Driver.ServerWaitSync(ctx, syncObj, flags, timeout); |
} |
|
|
void GLAPIENTRY |
_mesa_GetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, |
GLint *values) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_sync_object *const syncObj = (struct gl_sync_object *) sync; |
GLsizei size = 0; |
GLint v[1]; |
|
if (!_mesa_validate_sync(ctx, syncObj)) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glGetSynciv (not a valid sync object)"); |
return; |
} |
|
switch (pname) { |
case GL_OBJECT_TYPE: |
v[0] = syncObj->Type; |
size = 1; |
break; |
|
case GL_SYNC_CONDITION: |
v[0] = syncObj->SyncCondition; |
size = 1; |
break; |
|
case GL_SYNC_STATUS: |
/* Update the state of the sync by dipping into the driver. Note that |
* this call won't block. It just updates state in the common object |
* data from the current driver state. |
*/ |
ctx->Driver.CheckSync(ctx, syncObj); |
|
v[0] = (syncObj->StatusFlag) ? GL_SIGNALED : GL_UNSIGNALED; |
size = 1; |
break; |
|
case GL_SYNC_FLAGS: |
v[0] = syncObj->Flags; |
size = 1; |
break; |
|
default: |
_mesa_error(ctx, GL_INVALID_ENUM, "glGetSynciv(pname=0x%x)\n", pname); |
return; |
} |
|
if (size > 0 && bufSize > 0) { |
const GLsizei copy_count = MIN2(size, bufSize); |
|
memcpy(values, v, sizeof(GLint) * copy_count); |
} |
|
if (length != NULL) { |
*length = size; |
} |
} |