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| author | NAKAMURA Takumi <geek4civic@gmail.com> | 2013-08-22 10:23:52 +0000 |
|---|---|---|
| committer | NAKAMURA Takumi <geek4civic@gmail.com> | 2013-08-22 10:23:52 +0000 |
| commit | 378cd84adfe988166c3a45005043b506e3485c34 (patch) | |
| tree | 5f2db1480ed152d9da0fd600be315185e98ce399 | |
| parent | f6db9425648e9d9b965dc0aae9f63afbb3e7a5b8 (diff) | |
| download | external_llvm-378cd84adfe988166c3a45005043b506e3485c34.zip external_llvm-378cd84adfe988166c3a45005043b506e3485c34.tar.gz external_llvm-378cd84adfe988166c3a45005043b506e3485c34.tar.bz2 | |
MemoryBuffer.cpp: Consider if PageSize were not 4096 in shouldUseMmap(). Follow-up to r188903.
The AllocationGranularity can be 65536 on Win32, even on Cygwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188998 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Support/MemoryBuffer.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp index cab45c7..1c45c69 100644 --- a/lib/Support/MemoryBuffer.cpp +++ b/lib/Support/MemoryBuffer.cpp @@ -276,7 +276,7 @@ static bool shouldUseMmap(int FD, int PageSize) { // We don't use mmap for small files because this can severely fragment our // address space. - if (MapSize < 4096*4) + if (MapSize < 4 * 4096 || MapSize < (unsigned)PageSize) return false; if (!RequiresNullTerminator) |