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distinguish between 'defined' and 'declared'

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This commit is contained in:
Araq 2014-08-11 20:38:28 +02:00
commit dd806cafa0
36 changed files with 155 additions and 96 deletions
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6
lib/system/atomics.nim
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@ -174,7 +174,7 @@ proc atomicInc*(memLoc: var int, x: int = 1): int =
proc atomicDec*(memLoc: var int, x: int = 1): int =
when defined(gcc) and hasThreadSupport:
when defined(atomic_sub_fetch):
when declared(atomic_sub_fetch):
result = atomic_sub_fetch(memLoc.addr, x, ATOMIC_RELAXED)
else:
result = atomic_add_fetch(memLoc.addr, -x, ATOMIC_RELAXED)
@ -201,14 +201,14 @@ when (defined(x86) or defined(amd64)) and (defined(gcc) or defined(llvm_gcc)):
{.emit: """asm volatile("pause" ::: "memory");""".}
elif (defined(x86) or defined(amd64)) and defined(vcc):
proc cpuRelax {.importc: "YieldProcessor", header: "<windows.h>".}
elif defined(intelc):
elif defined(icl):
proc cpuRelax {.importc: "_mm_pause", header: "xmmintrin.h".}
elif false:
from os import sleep
proc cpuRelax {.inline.} = os.sleep(1)
when not defined(fence) and hasThreadSupport:
when not declared(fence) and hasThreadSupport:
# XXX fixme
proc fence*() {.inline.} =
var dummy: bool