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Intel(R) Threading Building Blocks Doxygen Documentation  version 4.2.3
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gcc_generic.h File Reference
#include <stdint.h>
#include <unistd.h>
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Namespaces

 tbb
 The graph class.
 
 tbb::internal
 Identifiers declared inside namespace internal should never be used directly by client code.
 
 tbb::internal::gcc_builtins
 

Macros

#define __TBB_WORDSIZE   __SIZEOF_POINTER__
 
#define __TBB_ENDIANNESS   __TBB_ENDIAN_DETECT
 
#define __TBB_acquire_consistency_helper()   __sync_synchronize()
 
#define __TBB_release_consistency_helper()   __sync_synchronize()
 
#define __TBB_full_memory_fence()   __sync_synchronize()
 
#define __TBB_control_consistency_helper()   __sync_synchronize()
 
#define __TBB_MACHINE_DEFINE_ATOMICS(S, T)
 
#define __TBB_USE_GENERIC_FETCH_STORE   1
 
#define __TBB_USE_GENERIC_HALF_FENCED_LOAD_STORE   1
 
#define __TBB_USE_GENERIC_RELAXED_LOAD_STORE   1
 
#define __TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE   1
 
#define __TBB_AtomicOR(P, V)   __TBB_machine_or(P,V)
 
#define __TBB_AtomicAND(P, V)   __TBB_machine_and(P,V)
 
#define __TBB_TryLockByte   __TBB_machine_try_lock_byte
 
#define __TBB_UnlockByte   __TBB_machine_unlock_byte
 
#define __TBB_Log2(V)   __TBB_machine_lg(V)
 

Typedefs

typedef unsigned char __TBB_Flag
 
typedef __TBB_atomic __TBB_Flag __TBB_atomic_flag
 

Functions

static void __TBB_machine_or (volatile void *ptr, uintptr_t addend)
 
static void __TBB_machine_and (volatile void *ptr, uintptr_t addend)
 
bool __TBB_machine_try_lock_byte (__TBB_atomic_flag &flag)
 
void __TBB_machine_unlock_byte (__TBB_atomic_flag &flag)
 
int tbb::internal::gcc_builtins::clz (unsigned int x)
 
int tbb::internal::gcc_builtins::clz (unsigned long int x)
 
int tbb::internal::gcc_builtins::clz (unsigned long long int x)
 
static intptr_t __TBB_machine_lg (uintptr_t x)
 

Macro Definition Documentation

◆ __TBB_acquire_consistency_helper

#define __TBB_acquire_consistency_helper ( )    __sync_synchronize()

As this generic implementation has absolutely no information about underlying hardware, its performance most likely will be sub-optimal because of full memory fence usages where a more lightweight synchronization means (or none at all) could suffice. Thus if you use this header to enable TBB on a new platform, consider forking it and relaxing below helpers as appropriate.

Definition at line 57 of file gcc_generic.h.

◆ __TBB_AtomicAND

#define __TBB_AtomicAND (   P,
  V 
)    __TBB_machine_and(P,V)

Definition at line 208 of file gcc_generic.h.

◆ __TBB_AtomicOR

#define __TBB_AtomicOR (   P,
  V 
)    __TBB_machine_or(P,V)

Definition at line 207 of file gcc_generic.h.

◆ __TBB_control_consistency_helper

#define __TBB_control_consistency_helper ( )    __sync_synchronize()

Definition at line 60 of file gcc_generic.h.

◆ __TBB_ENDIANNESS

#define __TBB_ENDIANNESS   __TBB_ENDIAN_DETECT

FPU control setting not available for non-Intel architectures on Android

Definition at line 46 of file gcc_generic.h.

◆ __TBB_full_memory_fence

#define __TBB_full_memory_fence ( )    __sync_synchronize()

Definition at line 59 of file gcc_generic.h.

◆ __TBB_Log2

#define __TBB_Log2 (   V)    __TBB_machine_lg(V)

Definition at line 225 of file gcc_generic.h.

◆ __TBB_MACHINE_DEFINE_ATOMICS

#define __TBB_MACHINE_DEFINE_ATOMICS (   S,
  T 
)
Value:
inline T __TBB_machine_cmpswp##S( volatile void *ptr, T value, T comparand ) { \
return __sync_val_compare_and_swap(reinterpret_cast<volatile T *>(ptr),comparand,value); \
} \
inline T __TBB_machine_fetchadd##S( volatile void *ptr, T value ) { \
return __sync_fetch_and_add(reinterpret_cast<volatile T *>(ptr),value); \
}
S
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain __itt_id ITT_FORMAT p const __itt_domain __itt_id __itt_timestamp __itt_timestamp ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain ITT_FORMAT p const __itt_domain __itt_string_handle unsigned long long ITT_FORMAT lu const __itt_domain __itt_string_handle unsigned long long ITT_FORMAT lu const __itt_domain __itt_id __itt_string_handle __itt_metadata_type size_t void ITT_FORMAT p const __itt_domain __itt_id __itt_string_handle const wchar_t size_t ITT_FORMAT lu const __itt_domain __itt_id __itt_relation __itt_id ITT_FORMAT p const wchar_t int ITT_FORMAT __itt_group_mark S
Definition: ittnotify_static.h:212
value
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain __itt_id ITT_FORMAT p const __itt_domain __itt_id __itt_timestamp __itt_timestamp ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain ITT_FORMAT p const __itt_domain __itt_string_handle unsigned long long value
Definition: ittnotify_static.h:192

Definition at line 62 of file gcc_generic.h.

◆ __TBB_release_consistency_helper

#define __TBB_release_consistency_helper ( )    __sync_synchronize()

Definition at line 58 of file gcc_generic.h.

◆ __TBB_TryLockByte

#define __TBB_TryLockByte   __TBB_machine_try_lock_byte

Definition at line 210 of file gcc_generic.h.

◆ __TBB_UnlockByte

#define __TBB_UnlockByte   __TBB_machine_unlock_byte

Definition at line 211 of file gcc_generic.h.

◆ __TBB_USE_GENERIC_FETCH_STORE

#define __TBB_USE_GENERIC_FETCH_STORE   1

Definition at line 70 of file gcc_generic.h.

◆ __TBB_USE_GENERIC_HALF_FENCED_LOAD_STORE

#define __TBB_USE_GENERIC_HALF_FENCED_LOAD_STORE   1

Definition at line 112 of file gcc_generic.h.

◆ __TBB_USE_GENERIC_RELAXED_LOAD_STORE

#define __TBB_USE_GENERIC_RELAXED_LOAD_STORE   1

Definition at line 113 of file gcc_generic.h.

◆ __TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE

#define __TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE   1

Definition at line 114 of file gcc_generic.h.

◆ __TBB_WORDSIZE

#define __TBB_WORDSIZE   __SIZEOF_POINTER__

Definition at line 26 of file gcc_generic.h.

Typedef Documentation

◆ __TBB_atomic_flag

typedef __TBB_atomic __TBB_Flag __TBB_atomic_flag

Definition at line 106 of file gcc_generic.h.

◆ __TBB_Flag

typedef unsigned char __TBB_Flag

Definition at line 105 of file gcc_generic.h.

Function Documentation

◆ __TBB_machine_and()

static void __TBB_machine_and ( volatile void *  ptr,
uintptr_t  addend 
)
inlinestatic

Definition at line 120 of file gcc_generic.h.

120  {
121  __sync_fetch_and_and(reinterpret_cast<volatile uintptr_t *>(ptr),addend);
122 }

◆ __TBB_machine_lg()

static intptr_t __TBB_machine_lg ( uintptr_t  x)
inlinestatic

Definition at line 220 of file gcc_generic.h.

220  {
221  // If P is a power of 2 and x<P, then (P-1)-x == (P-1) XOR x
222  return (sizeof(x)*8 - 1) ^ tbb::internal::gcc_builtins::clz(x);
223 }
tbb::internal::gcc_builtins::clz
int clz(unsigned int x)
Definition: gcc_generic.h:215

References tbb::internal::gcc_builtins::clz().

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◆ __TBB_machine_or()

static void __TBB_machine_or ( volatile void *  ptr,
uintptr_t  addend 
)
inlinestatic

Definition at line 116 of file gcc_generic.h.

116  {
117  __sync_fetch_and_or(reinterpret_cast<volatile uintptr_t *>(ptr),addend);
118 }

◆ __TBB_machine_try_lock_byte()

bool __TBB_machine_try_lock_byte ( __TBB_atomic_flag &  flag)
inline

Definition at line 124 of file gcc_generic.h.

124  {
125  return __sync_lock_test_and_set(&flag,1)==0;
126 }

◆ __TBB_machine_unlock_byte()

void __TBB_machine_unlock_byte ( __TBB_atomic_flag &  flag)
inline

Definition at line 128 of file gcc_generic.h.

128  {
129  __sync_lock_release(&flag);
130 }

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