diff options
Diffstat (limited to 'llvm/lib/Support/Threading.cpp')
| -rw-r--r-- | llvm/lib/Support/Threading.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/lib/Support/Threading.cpp b/llvm/lib/Support/Threading.cpp index 6a10b988d46..473c84808af 100644 --- a/llvm/lib/Support/Threading.cpp +++ b/llvm/lib/Support/Threading.cpp @@ -47,6 +47,8 @@ void llvm::llvm_execute_on_thread(void (*Fn)(void *), void *UserData, unsigned llvm::heavyweight_hardware_concurrency() { return 1; } +unsigned llvm::hardware_concurrency() { return 1; } + uint64_t llvm::get_threadid() { return 0; } uint32_t llvm::get_max_thread_name_length() { return 0; } @@ -71,6 +73,18 @@ unsigned llvm::heavyweight_hardware_concurrency() { return NumPhysical; } +unsigned llvm::hardware_concurrency() { +#if defined(HAVE_SCHED_GETAFFINITY) && defined(HAVE_CPU_COUNT) + cpu_set_t Set; + if (sched_getaffinity(0, sizeof(Set), &Set)) + return CPU_COUNT(&Set); +#endif + // Guard against std::thread::hardware_concurrency() returning 0. + if (unsigned Val = std::thread::hardware_concurrency()) + return Val; + return 1; +} + // Include the platform-specific parts of this class. #ifdef LLVM_ON_UNIX #include "Unix/Threading.inc" |
