glgetsynciv(3g) [centos man page]

GLGETSYNCIV(3G) 						   OpenGL Manual						   GLGETSYNCIV(3G)

NAME

       glGetSynciv - query the properties of a sync object

C SPECIFICATION

       void glGetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values);

PARAMETERS

       sync
	   Specifies the sync object whose properties to query.

       pname
	   Specifies the parameter whose value to retrieve from the sync object specified in sync.

       bufSize
	   Specifies the size of the buffer whose address is given in values.

       length
	   Specifies the address of an variable to receive the number of integers placed in values.

       values
	   Specifies the address of an array to receive the values of the queried parameter.

DESCRIPTION

       glGetSynciv retrieves properties of a sync object.  sync specifies the name of the sync object whose properties to retrieve.

       On success, glGetSynciv replaces up to bufSize integers in values with the corresponding property values of the object being queried. The
       actual number of integers replaced is returned in the variable whose address is specified in length. If length is NULL, no length is
       returned.

       If pname is GL_OBJECT_TYPE, a single value representing the specific type of the sync object is placed in values. The only type supported
       is GL_SYNC_FENCE.

       If pname is GL_SYNC_STATUS, a single value representing the status of the sync object (GL_SIGNALED or GL_UNSIGNALED) is placed in values.

       If pname is GL_SYNC_CONDITION, a single value representing the condition of the sync object is placed in values. The only condition
       supported is GL_SYNC_GPU_COMMANDS_COMPLETE.

       If pname is GL_SYNC_FLAGS, a single value representing the flags with which the sync object was created is placed in values. No flags are
       currently supported[1].

       If an error occurs, nothing will be written to values or length.

ERRORS

       GL_INVALID_VALUE is generated if sync is not the name of a sync object.

       GL_INVALID_ENUM is generated if pname is not one of the accepted tokens.

SEE ALSO

       glFenceSync(), glWaitSync(), glClientWaitSync()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS

       opengl.org

NOTES

	1. flags is expected to be used in future extensions to the sync objects.

opengl.org							    06/10/2014							   GLGETSYNCIV(3G)

Check Out this Related Man Page

GLWAITSYNC(3G)							   OpenGL Manual						    GLWAITSYNC(3G)

NAME

       glWaitSync - instruct the GL server to block until the specified sync object becomes signaled

C SPECIFICATION

       void glWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout);

PARAMETERS

       sync
	   Specifies the sync object whose status to wait on.

       flags
	   A bitfield controlling the command flushing behavior.  flags may be zero.

       timeout
	   Specifies the timeout that the server should wait before continuing.  timeout must be GL_TIMEOUT_IGNORED.

DESCRIPTION

       glWaitSync causes the GL server to block and wait until sync becomes signaled.  sync is the name of an existing sync object upon which to
       wait.  flags and timeout are currently not used and must be set to zero and the special value GL_TIMEOUT_IGNORED, respectively[1].
       glWaitSync will always wait no longer than an implementation-dependent timeout. The duration of this timeout in nanoseconds may be queried
       by calling glGet() with the parameter GL_MAX_SERVER_WAIT_TIMEOUT. There is currently no way to determine whether glWaitSync unblocked
       because the timeout expired or because the sync object being waited on was signaled.

       If an error occurs, glWaitSync does not cause the GL server to block.

NOTES

       glWaitSync is available only if the GL version is 3.2 or higher.

ERRORS

       GL_INVALID_OPERATION is generated if sync is not the name of a sync object.

       GL_INVALID_VALUE is generated if flags is not zero.

       GL_INVALID_VALUE is generated if timeout is not GL_TIMEOUT_IGNORED.

SEE ALSO

       glFenceSync(), glClientWaitSync()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS

       opengl.org

NOTES

	1. flags and timeout are placeholders for anticipated future extensions of sync object capabilities. They must have these reserved values
	   in order that existing code calling glWaitSync operate properly in the presence of such extensions.

opengl.org							    06/10/2014							    GLWAITSYNC(3G)

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glgetsynciv(3g) [centos man page]

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