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tsan: refactor overly-complex logical condition 

llvm-svn: 192698
This commit is contained in:
Dmitry Vyukov 2013-10-15 13:04:42 +00:00
parent 0c3b653922
commit 347f1a5ee0
1 changed files with 31 additions and 25 deletions
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56
compiler-rt/lib/sanitizer_common/sanitizer_libignore.cc
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@ -46,39 +46,45 @@ void LibIgnore::OnLibraryLoaded(const char *name) {
BlockingMutexLock lock(&mutex_);
MemoryMappingLayout proc_maps(/*cache_enabled*/false);
InternalScopedBuffer<char> fn(4096);
InternalScopedBuffer<char> module(4096);
for (uptr i = 0; i < count_; i++) {
Lib *lib = &libs_[i];
bool loaded = false;
proc_maps.Reset();
uptr b, e, off, prot;
while (proc_maps.Next(&b, &e, &off, fn.data(), fn.size(), &prot)) {
while (proc_maps.Next(&b, &e, &off, module.data(), module.size(), &prot)) {
if ((prot & MemoryMappingLayout::kProtectionExecute) == 0)
continue;
bool matched = false;
bool symlink = false;
if (((prot & MemoryMappingLayout::kProtectionExecute) != 0) &&
(TemplateMatch(lib->templ, fn.data()) ||
// Resolve symlinks.
(real_name != 0 && real_name[0] != 0 &&
if (TemplateMatch(lib->templ, module.data()))
matched = true;
// Resolve symlinks.
if (real_name != 0 && real_name[0] != 0 &&
TemplateMatch(lib->templ, name) &&
internal_strcmp(real_name, fn.data()) == 0 &&
(symlink = true)))) {
if (loaded) {
Report("%s: called_from_lib suppression '%s' is matched against"
" 2 libraries: '%s' and '%s'\n",
SanitizerToolName, lib->templ, lib->name, fn.data());
Die();
}
loaded = true;
if (!lib->loaded) {
lib->loaded = true;
lib->name = internal_strdup(fn.data());
if (symlink)
lib->real_name = internal_strdup(real_name);
const uptr idx = atomic_load(&loaded_count_, memory_order_relaxed);
code_ranges_[idx].begin = b;
code_ranges_[idx].end = e;
atomic_store(&loaded_count_, idx + 1, memory_order_release);
}
internal_strcmp(real_name, module.data()) == 0) {
matched = true;
symlink = true;
}
if (!matched)
continue;
if (loaded) {
Report("%s: called_from_lib suppression '%s' is matched against"
" 2 libraries: '%s' and '%s'\n",
SanitizerToolName, lib->templ, lib->name, module.data());
Die();
}
loaded = true;
if (lib->loaded)
continue;
lib->loaded = true;
lib->name = internal_strdup(module.data());
if (symlink)
lib->real_name = internal_strdup(real_name);
const uptr idx = atomic_load(&loaded_count_, memory_order_relaxed);
code_ranges_[idx].begin = b;
code_ranges_[idx].end = e;
atomic_store(&loaded_count_, idx + 1, memory_order_release);
}
if (lib->loaded && !loaded) {
Report("%s: library '%s' that was matched against called_from_lib"