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Merge pull request #11162 from NixOS/rename-stack-limit

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Rename osStackLow -> osStackLimit
This commit is contained in:
Eelco Dolstra 2024-07-24 16:18:26 +02:00 committed by GitHub
commit b13ba7490c
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1 changed files with 7 additions and 6 deletions
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13
src/libexpr/eval-gc.cc
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@ -86,12 +86,13 @@ void fixupBoehmStackPointer(void ** sp_ptr, void * _pthread_id)
auto pthread_id = reinterpret_cast<pthread_t>(_pthread_id);
pthread_attr_t pattr;
size_t osStackSize;
void * osStackLow;
// The low address of the stack, which grows down.
void * osStackLimit;
void * osStackBase;
# ifdef __APPLE__
osStackSize = pthread_get_stacksize_np(pthread_id);
osStackLow = pthread_get_stackaddr_np(pthread_id);
osStackLimit = pthread_get_stackaddr_np(pthread_id);
# else
if (pthread_attr_init(&pattr)) {
throw Error("fixupBoehmStackPointer: pthread_attr_init failed");
@ -110,18 +111,18 @@ void fixupBoehmStackPointer(void ** sp_ptr, void * _pthread_id)
# else
# error "Need one of `pthread_attr_get_np` or `pthread_getattr_np`"
# endif
if (pthread_attr_getstack(&pattr, &osStackLow, &osStackSize)) {
if (pthread_attr_getstack(&pattr, &osStackLimit, &osStackSize)) {
throw Error("fixupBoehmStackPointer: pthread_attr_getstack failed");
}
if (pthread_attr_destroy(&pattr)) {
throw Error("fixupBoehmStackPointer: pthread_attr_destroy failed");
}
# endif
osStackBase = (char *) osStackLow + osStackSize;
osStackBase = (char *) osStackLimit + osStackSize;
// NOTE: We assume the stack grows down, as it does on all architectures we support.
// Architectures that grow the stack up are rare.
if (sp >= osStackBase || sp < osStackLow) { // lo is outside the os stack
sp = osStackLow;
if (sp >= osStackBase || sp < osStackLimit) { // sp is outside the os stack
sp = osStackLimit;
}
}