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MultiThreaded Demo:

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- fixing various race conditions throughout (usage of static vars, etc)
 - addition of a few lightweight mutexes (which are compiled out by default)
 - slight code rearrangement in discreteDynamicsWorld to facilitate multithreading
 - PoolAllocator::allocate() can now be called when pool is full without
     crashing (null pointer returned)
 - PoolAllocator allocate and freeMemory, are OPTIONALLY threadsafe
     (default is un-threadsafe)
 - CollisionDispatcher no longer checks if the pool allocator is full
     before calling allocate(), instead it just calls allocate() and
     checks if the return is null -- this avoids a race condition
 - SequentialImpulseConstraintSolver OPTIONALLY uses different logic in
     getOrInitSolverBody() to avoid a race condition with kinematic bodies
 - addition of 2 classes which together allow simulation islands to be run
   in parallel:
    - btSimulationIslandManagerMt
    - btDiscreteDynamicsWorldMt
 - MultiThreadedDemo example in the example browser demonstrating use of
   OpenMP, Microsoft PPL, and Intel TBB
 - use multithreading for other demos
 - benchmark demo: add parallel raycasting
This commit is contained in:
Lunkhound
2016-09-27 00:01:45 -07:00
parent f01389ded2
commit 1c3686ca51
48 changed files with 3168 additions and 197 deletions
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43
examples/ExampleBrowser/CMakeLists.txt
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@@ -32,6 +32,7 @@ ADD_LIBRARY(BulletExampleBrowserLib
GL_ShapeDrawer.cpp
CollisionShape2TriangleMesh.cpp
CollisionShape2TriangleMesh.h
../CommonInterfaces/CommonRigidBodyBase.cpp
../Utils/b3Clock.cpp
../Utils/b3Clock.h
../Utils/b3ResourcePath.cpp
@@ -108,6 +109,29 @@ ELSE(WIN32)
ENDIF(APPLE)
ENDIF(WIN32)
IF (BULLET2_MULTITHREADED_OPEN_MP_DEMO)
ADD_DEFINITIONS("-DBT_USE_OPENMP=1")
IF (MSVC)
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /openmp")
ELSE (MSVC)
# GCC, Clang
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")
ENDIF (MSVC)
ENDIF (BULLET2_MULTITHREADED_OPEN_MP_DEMO)
IF (BULLET2_MULTITHREADED_PPL_DEMO)
ADD_DEFINITIONS("-DBT_USE_PPL=1")
ENDIF (BULLET2_MULTITHREADED_PPL_DEMO)
IF (BULLET2_MULTITHREADED_TBB_DEMO)
SET (BULLET2_TBB_INCLUDE_DIR "not found" CACHE PATH "Directory for Intel TBB includes.")
SET (BULLET2_TBB_LIB_DIR "not found" CACHE PATH "Directory for Intel TBB libraries.")
find_library(TBB_LIBRARY tbb PATHS ${BULLET2_TBB_LIB_DIR})
find_library(TBBMALLOC_LIBRARY tbbmalloc PATHS ${BULLET2_TBB_LIB_DIR})
ADD_DEFINITIONS("-DBT_USE_TBB=1")
INCLUDE_DIRECTORIES( ${BULLET2_TBB_INCLUDE_DIR} )
LINK_LIBRARIES( ${TBB_LIBRARY} ${TBBMALLOC_LIBRARY} )
ENDIF (BULLET2_MULTITHREADED_TBB_DEMO)
SET(ExtendedTutorialsSources
../ExtendedTutorials/Chain.cpp
@@ -173,6 +197,8 @@ SET(BulletExampleBrowser_SRCS
../InverseKinematics/InverseKinematicsExample.h
../ForkLift/ForkLiftDemo.cpp
../ForkLift/ForkLiftDemo.h
../MultiThreadedDemo/MultiThreadedDemo.cpp
../MultiThreadedDemo/MultiThreadedDemo.h
../Tutorial/Tutorial.cpp
../Tutorial/Tutorial.h
../Tutorial/Dof6ConstraintTutorial.cpp
@@ -346,9 +372,26 @@ ADD_CUSTOM_COMMAND(
COMMAND ${CMAKE_COMMAND} ARGS -E copy_directory ${BULLET_PHYSICS_SOURCE_DIR}/data ${PROJECT_BINARY_DIR}/data
)
IF (BULLET2_MULTITHREADED_TBB_DEMO AND WIN32)
# add a post build command to copy some dlls to the executable directory
set(TBB_VC_VER "vc12")
set(TBB_VC_ARCH "ia32")
# assume 32-bit build in VC12 for now
# checks can be added here at a later time
ADD_CUSTOM_COMMAND(TARGET App_ExampleBrowser POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_if_different
"${BULLET2_TBB_INCLUDE_DIR}/../bin/${TBB_VC_ARCH}/${TBB_VC_VER}/tbb.dll"
$<TARGET_FILE_DIR:App_ExampleBrowser>)
ADD_CUSTOM_COMMAND(TARGET App_ExampleBrowser POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_if_different
"${BULLET2_TBB_INCLUDE_DIR}/../bin/${TBB_VC_ARCH}/${TBB_VC_VER}/tbbmalloc.dll"
$<TARGET_FILE_DIR:App_ExampleBrowser>)
ENDIF (BULLET2_MULTITHREADED_TBB_DEMO AND WIN32)
IF (INTERNAL_ADD_POSTFIX_EXECUTABLE_NAMES)
SET_TARGET_PROPERTIES(App_ExampleBrowser PROPERTIES DEBUG_POSTFIX "_Debug")
SET_TARGET_PROPERTIES(App_ExampleBrowser PROPERTIES MINSIZEREL_POSTFIX "_MinsizeRel")
SET_TARGET_PROPERTIES(App_ExampleBrowser PROPERTIES RELWITHDEBINFO_POSTFIX "_RelWithDebugInfo")
ENDIF(INTERNAL_ADD_POSTFIX_EXECUTABLE_NAMES)