[compiler-rt] r313929 - [tsan] Annotate function parameters with attribute 'noescape'.
Akira Hatanaka via llvm-commits
llvm-commits at lists.llvm.org
Thu Sep 21 15:16:50 PDT 2017
Author: ahatanak
Date: Thu Sep 21 15:16:50 2017
New Revision: 313929
URL: http://llvm.org/viewvc/llvm-project?rev=313929&view=rev
Log:
[tsan] Annotate function parameters with attribute 'noescape'.
This commit annotates the block parameters of the following functions
declared in compiler-rt with 'noescape':
- dispatch_sync
- dispatch_barrier_sync
- dispatch_once
- dispatch_apply
This is needed to commit the patch that adds support for 'noescape' in
clang (see https://reviews.llvm.org/D32210) since these functions are
annotated with 'noescape' in the SDK header files.
Differential Revision: https://reviews.llvm.org/D32210
Modified:
compiler-rt/trunk/lib/tsan/rtl/tsan_libdispatch_mac.cc
Modified: compiler-rt/trunk/lib/tsan/rtl/tsan_libdispatch_mac.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/rtl/tsan_libdispatch_mac.cc?rev=313929&r1=313928&r2=313929&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_libdispatch_mac.cc (original)
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_libdispatch_mac.cc Thu Sep 21 15:16:50 2017
@@ -177,7 +177,8 @@ static void invoke_and_release_block(voi
}
#define DISPATCH_INTERCEPT_SYNC_B(name, barrier) \
- TSAN_INTERCEPTOR(void, name, dispatch_queue_t q, dispatch_block_t block) { \
+ TSAN_INTERCEPTOR(void, name, dispatch_queue_t q, \
+ DISPATCH_NOESCAPE dispatch_block_t block) { \
SCOPED_TSAN_INTERCEPTOR(name, q, block); \
SCOPED_TSAN_INTERCEPTOR_USER_CALLBACK_START(); \
dispatch_block_t heap_block = Block_copy(block); \
@@ -267,7 +268,7 @@ TSAN_INTERCEPTOR(void, dispatch_after_f,
// need to undefine the macro.
#undef dispatch_once
TSAN_INTERCEPTOR(void, dispatch_once, dispatch_once_t *predicate,
- dispatch_block_t block) {
+ DISPATCH_NOESCAPE dispatch_block_t block) {
SCOPED_INTERCEPTOR_RAW(dispatch_once, predicate, block);
atomic_uint32_t *a = reinterpret_cast<atomic_uint32_t *>(predicate);
u32 v = atomic_load(a, memory_order_acquire);
@@ -477,7 +478,8 @@ TSAN_INTERCEPTOR(void, dispatch_source_s
}
TSAN_INTERCEPTOR(void, dispatch_apply, size_t iterations,
- dispatch_queue_t queue, void (^block)(size_t)) {
+ dispatch_queue_t queue,
+ DISPATCH_NOESCAPE void (^block)(size_t)) {
SCOPED_TSAN_INTERCEPTOR(dispatch_apply, iterations, queue, block);
void *parent_to_child_sync = nullptr;
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