Function get_thread_id

source/extern/rpmalloc.c:788–818

Fast thread ID

//! Fast thread ID
static inline uintptr_t
get_thread_id(void) {
#if defined(_WIN32)
	return (uintptr_t)((void*)NtCurrentTeb());
#elif (defined(__GNUC__) || defined(__clang__)) && !defined(__CYGWIN__)
	uintptr_t tid;
#  if defined(__i386__)
	__asm__("movl %%gs:0, %0" : "=r" (tid) : : );
#  elif defined(__x86_64__)
#    if defined(__MACH__)
	__asm__("movq %%gs:0, %0" : "=r" (tid) : : );
#    else
	__asm__("movq %%fs:0, %0" : "=r" (tid) : : );
#    endif
#  elif defined(__arm__)
	__asm__ volatile ("mrc p15, 0, %0, c13, c0, 3" : "=r" (tid));
#  elif defined(__aarch64__)
#    if defined(__MACH__)
	// tpidr_el0 likely unused, always return 0 on iOS
	__asm__ volatile ("mrs %0, tpidrro_el0" : "=r" (tid));
#    else
	__asm__ volatile ("mrs %0, tpidr_el0" : "=r" (tid));
#    endif
#  else
#    error This platform needs implementation of get_thread_id()
#  endif
	return tid;
#else
#    error This platform needs implementation of get_thread_id()
#endif
}

//! Set the current thread heap
static void