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authorGravatar Abseil Team <absl-team@google.com>2018-11-19 08:14:58 -0800
committerGravatar Derek Mauro <dmauro@google.com>2018-11-19 15:11:12 -0500
commit3088e76c597e068479e82508b1770a7ad0c806b6 (patch)
tree02a478be2cc18263501f80599d3be8ee9abce51b
parentf6ae816808cd913e0e2b3e2af14f328fa1071af0 (diff)
Export of internal Abseil changes.
-- 5278e56bd7d322ecf161eaf29fd7fa3941d7431b by Greg Falcon <gfalcon@google.com>: internal change PiperOrigin-RevId: 222078614 GitOrigin-RevId: 5278e56bd7d322ecf161eaf29fd7fa3941d7431b Change-Id: I1e86bef2e3733c81148a1a42dccd8182fe3f7fae
-rw-r--r--absl/base/internal/direct_mmap.h4
-rw-r--r--absl/base/internal/low_level_alloc.cc2
-rw-r--r--absl/debugging/failure_signal_handler.cc4
-rw-r--r--absl/debugging/symbolize_elf.inc4
4 files changed, 14 insertions, 0 deletions
diff --git a/absl/base/internal/direct_mmap.h b/absl/base/internal/direct_mmap.h
index 3e5368db..654a6007 100644
--- a/absl/base/internal/direct_mmap.h
+++ b/absl/base/internal/direct_mmap.h
@@ -75,7 +75,11 @@ inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
// On these architectures, implement mmap with mmap2.
static int pagesize = 0;
if (pagesize == 0) {
+#if defined(__wasm__) || defined(__asmjs__)
+ pagesize = getpagesize();
+#else
pagesize = sysconf(_SC_PAGESIZE);
+#endif
}
if (offset < 0 || offset % pagesize != 0) {
errno = EINVAL;
diff --git a/absl/base/internal/low_level_alloc.cc b/absl/base/internal/low_level_alloc.cc
index 015edf8d..4af9c05d 100644
--- a/absl/base/internal/low_level_alloc.cc
+++ b/absl/base/internal/low_level_alloc.cc
@@ -324,6 +324,8 @@ size_t GetPageSize() {
SYSTEM_INFO system_info;
GetSystemInfo(&system_info);
return std::max(system_info.dwPageSize, system_info.dwAllocationGranularity);
+#elif defined(__wasm__) || defined(__asmjs__)
+ return getpagesize();
#else
return sysconf(_SC_PAGESIZE);
#endif
diff --git a/absl/debugging/failure_signal_handler.cc b/absl/debugging/failure_signal_handler.cc
index 6cecd93f..c2e56f9d 100644
--- a/absl/debugging/failure_signal_handler.cc
+++ b/absl/debugging/failure_signal_handler.cc
@@ -119,7 +119,11 @@ const char* FailureSignalToString(int signo) {
#ifndef _WIN32
static bool SetupAlternateStackOnce() {
+#if defined(__wasm__) || defined (__asjms__)
+ const size_t page_mask = getpagesize() - 1;
+#else
const size_t page_mask = sysconf(_SC_PAGESIZE) - 1;
+#endif
size_t stack_size = (std::max(SIGSTKSZ, 65536) + page_mask) & ~page_mask;
#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || \
defined(THREAD_SANITIZER)
diff --git a/absl/debugging/symbolize_elf.inc b/absl/debugging/symbolize_elf.inc
index b31362e6..97d767ab 100644
--- a/absl/debugging/symbolize_elf.inc
+++ b/absl/debugging/symbolize_elf.inc
@@ -333,7 +333,11 @@ static std::atomic<Symbolizer *> g_cached_symbolizer;
} // namespace
static int SymbolizerSize() {
+#if defined(__wasm__) || defined(__asmjs__)
+ int pagesize = getpagesize();
+#else
int pagesize = sysconf(_SC_PAGESIZE);
+#endif
return ((sizeof(Symbolizer) - 1) / pagesize + 1) * pagesize;
}