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8080298: Clean up os::...::supports_variable_stack_size()

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Reviewed-by: kbarrett, simonis, stuefe, coleenp
This commit is contained in:
David Holmes 2015-08-03 16:54:08 -04:00
parent 2bf01467e3
commit 8dfd822c41
14 changed files with 77 additions and 123 deletions
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52
hotspot/src/os/linux/vm/os_linux.cpp
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@ -711,39 +711,35 @@ bool os::create_thread(Thread* thread, ThreadType thr_type,
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
// stack size
if (os::Linux::supports_variable_stack_size()) {
// calculate stack size if it's not specified by caller
if (stack_size == 0) {
stack_size = os::Linux::default_stack_size(thr_type);
// calculate stack size if it's not specified by caller
if (stack_size == 0) {
stack_size = os::Linux::default_stack_size(thr_type);
switch (thr_type) {
case os::java_thread:
// Java threads use ThreadStackSize which default value can be
// changed with the flag -Xss
assert(JavaThread::stack_size_at_create() > 0, "this should be set");
stack_size = JavaThread::stack_size_at_create();
switch (thr_type) {
case os::java_thread:
// Java threads use ThreadStackSize which default value can be
// changed with the flag -Xss
assert(JavaThread::stack_size_at_create() > 0, "this should be set");
stack_size = JavaThread::stack_size_at_create();
break;
case os::compiler_thread:
if (CompilerThreadStackSize > 0) {
stack_size = (size_t)(CompilerThreadStackSize * K);
break;
case os::compiler_thread:
if (CompilerThreadStackSize > 0) {
stack_size = (size_t)(CompilerThreadStackSize * K);
break;
} // else fall through:
// use VMThreadStackSize if CompilerThreadStackSize is not defined
case os::vm_thread:
case os::pgc_thread:
case os::cgc_thread:
case os::watcher_thread:
if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
break;
}
} // else fall through:
// use VMThreadStackSize if CompilerThreadStackSize is not defined
case os::vm_thread:
case os::pgc_thread:
case os::cgc_thread:
case os::watcher_thread:
if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
break;
}
stack_size = MAX2(stack_size, os::Linux::min_stack_allowed);
pthread_attr_setstacksize(&attr, stack_size);
} else {
// let pthread_create() pick the default value.
}
stack_size = MAX2(stack_size, os::Linux::min_stack_allowed);
pthread_attr_setstacksize(&attr, stack_size);
// glibc guard page
pthread_attr_setguardsize(&attr, os::Linux::default_guard_size(thr_type));