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Name the thread stack and signal stack guard pages.

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Bug: http://b/22228722
Change-Id: I1dae672e386e404fb304a34496a29fe21134c784
This commit is contained in:
Elliott Hughes 2015-07-01 23:48:39 -07:00
parent 77455f85ab
commit eeb6b57e75
1 changed files with 2 additions and 0 deletions
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2
libc/bionic/pthread_create.cpp
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@ -87,6 +87,7 @@ void __init_alternate_signal_stack(pthread_internal_t* thread) {
// We can only use const static allocated string for mapped region name, as Android kernel // We can only use const static allocated string for mapped region name, as Android kernel
// uses the string pointer directly when dumping /proc/pid/maps. // uses the string pointer directly when dumping /proc/pid/maps.
prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, ss.ss_sp, ss.ss_size, "thread signal stack"); prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, ss.ss_sp, ss.ss_size, "thread signal stack");
prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, stack_base, PAGE_SIZE, "thread signal stack guard page");
} }
} }
@ -140,6 +141,7 @@ static void* __create_thread_mapped_space(size_t mmap_size, size_t stack_guard_s
munmap(space, mmap_size); munmap(space, mmap_size);
return NULL; return NULL;
} }
prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, space, stack_guard_size, "thread stack guard page");
return space; return space;
} }