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8214816: os::read() should not transition to _thread_blocked with safepoint check on Solaris

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Reviewed-by: jiangli, mgronlun
This commit is contained in:
David Holmes 2019-01-13 16:54:01 -05:00
parent 1c5496ac8b
commit c6653432a5
14 changed files with 24 additions and 96 deletions
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29
src/hotspot/os/solaris/os_solaris.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -2844,33 +2844,6 @@ bool os::can_execute_large_page_memory() {
return true;
}
// Read calls from inside the vm need to perform state transitions
size_t os::read(int fd, void *buf, unsigned int nBytes) {
size_t res;
JavaThread* thread = (JavaThread*)Thread::current();
assert(thread->thread_state() == _thread_in_vm, "Assumed _thread_in_vm");
ThreadBlockInVM tbiv(thread);
RESTARTABLE(::read(fd, buf, (size_t) nBytes), res);
return res;
}
size_t os::read_at(int fd, void *buf, unsigned int nBytes, jlong offset) {
size_t res;
JavaThread* thread = (JavaThread*)Thread::current();
assert(thread->thread_state() == _thread_in_vm, "Assumed _thread_in_vm");
ThreadBlockInVM tbiv(thread);
RESTARTABLE(::pread(fd, buf, (size_t) nBytes, offset), res);
return res;
}
size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
size_t res;
assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_native,
"Assumed _thread_in_native");
RESTARTABLE(::read(fd, buf, (size_t) nBytes), res);
return res;
}
// Sleep forever; naked call to OS-specific sleep; use with CAUTION
void os::infinite_sleep() {
while (true) { // sleep forever ...