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Pre-size the vector in the pthread_create ENOMEM test. 

Just to avoid the possibility of an unfortunate mmap occurring in order to
grow the vector.

Bug: N/A
Test: ran tests
Change-Id: I850740461d761916a0377272664159d010da7b84
This commit is contained in:
Elliott Hughes 2017-10-02 22:49:18 -07:00
parent c6021960a4
commit 575129886c
1 changed files with 2 additions and 1 deletions
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3
tests/pthread_test.cpp
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@ -2117,8 +2117,9 @@ TEST(pthread, pthread_create__mmap_failures) {
const auto kPageSize = sysconf(_SC_PAGE_SIZE); const auto kPageSize = sysconf(_SC_PAGE_SIZE);
// Use up all the VMAs. By default this is 64Ki. // Use up all the VMAs. By default this is 64Ki (though some will already be in use).
std::vector<void*> pages; std::vector<void*> pages;
pages.reserve(64 * 1024);
int prot = PROT_NONE; int prot = PROT_NONE;
while (true) { while (true) {
void* page = mmap(nullptr, kPageSize, prot, MAP_ANON|MAP_PRIVATE, -1, 0); void* page = mmap(nullptr, kPageSize, prot, MAP_ANON|MAP_PRIVATE, -1, 0);