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--- base/allocator/partition_allocator/address_pool_manager.cc.orig 2021-04-14 01:08:36 UTC
+++ base/allocator/partition_allocator/address_pool_manager.cc
@@ -8,6 +8,13 @@
#include <sys/mman.h>
#endif
+#if defined(OS_FREEBSD)
+#include <sys/mman.h>
+#include <fcntl.h>
+
+#include "base/posix/eintr_wrapper.h"
+#endif
+
#include <algorithm>
#include <limits>
@@ -50,6 +57,14 @@ void DecommitPages(void* address, size_t size) {
void* ptr = mmap(address, size, PROT_NONE,
MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
PA_CHECK(ptr == address);
+#elif defined(OS_FREEBSD)
+ int fd = HANDLE_EINTR(open("/dev/zero", O_RDONLY));
+ PA_CHECK(fd != -1);
+
+ void *ptr = mmap(address, size, PROT_NONE,
+ MAP_FIXED | MAP_PRIVATE, fd, 0);
+ PA_PCHECK(ptr == address);
+ HANDLE_EINTR(close(fd));
#else
DecommitSystemPages(address, size, PageUpdatePermissions);
#endif
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