OGRE  1.10.12
Object-Oriented Graphics Rendering Engine
Ogre::Threads Class Reference

#include <OgreThreads.h>

Static Public Member Functions

static ThreadHandlePtr CreateThread (THREAD_ENTRY_POINT entryPoint, size_t threadIdx, void *param)
 Creates and executes a new thread. More...
static void Sleep (uint32 milliseconds)
 Sleeps for a minimum of the specified time of milliseconds. More...
static void WaitForThreads (size_t numThreadHandles, const ThreadHandlePtr *threadHandles)
 Waits until all threads are finished. More...
static void WaitForThreads (const ThreadHandleVec &threadHandles)

Detailed Description

use high-level WorkQueue interface instead

Member Function Documentation

◆ CreateThread()

static ThreadHandlePtr Ogre::Threads::CreateThread ( THREAD_ENTRY_POINT  entryPoint,
size_t  threadIdx,
void *  param 

Creates and executes a new thread.

The function to execute must be declared via THREAD_DECLARE, and the first argument must be provided through THREAD_GET. The following example shows how to use:

unsigned long myOwnThread( ThreadHandle *ownThreadHandle ) { Should print "Hello from thread 50" printf( "Hello from thread %i", ownThreadHandle.getThreadIdx() ); return 0; } THREAD_DECLARE( myOwnThread );

int main() { ThreadHandle handle = CreateThread( THREAD_GET( myOwnThread ), 50, 0 ); WaitForThreads( 1, handle ); return 0; }

It is not possible to retrieve the return value of the function because it's not portable (and trying to emulate it induces to easy-to-cause memory leaks; as we're dealing with C functions + potential race conditions, not C++)

entryPointFunction name of the entry point. VERY IMPORTANT: The entry point must be provided by THREAD_GET. Do not use a function directly, otherwise there will be memory leaks!
threadIdxOptional index for this thread (ie. when you have many worker threads to work on a section of data.
paramOptional argument to be passed.
Handle to created thread.

◆ WaitForThreads() [1/2]

static void Ogre::Threads::WaitForThreads ( size_t  numThreadHandles,
const ThreadHandlePtr threadHandles 

Waits until all threads are finished.

numThreadHandlesNumber of ThreadHandle passed in the array as 'threadHandles'
threadHandlesArray of numThreadHandles or more ThreadHandle
Don't pass more than 128 handles per call

◆ WaitForThreads() [2/2]

static void Ogre::Threads::WaitForThreads ( const ThreadHandleVec threadHandles)

◆ Sleep()

static void Ogre::Threads::Sleep ( uint32  milliseconds)

Sleeps for a minimum of the specified time of milliseconds.

Actual time spent sleeping may vary widely depending on OS and other variables. Do not feed 0.

The documentation for this class was generated from the following file: