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8338155: Fix -Wzero-as-null-pointer-constant warnings involving PTHREAD_MUTEX_INITIALIZER

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Reviewed-by: dholmes, dlong
This commit is contained in:
Kim Barrett 2024-08-13 07:27:49 +00:00
parent c27a8c8c8b
commit 73f7a5f15d
4 changed files with 20 additions and 4 deletions
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5
src/hotspot/os/linux/os_perf_linux.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2024, 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
@ -430,7 +430,10 @@ static int get_boot_time(uint64_t* time) {
}
static int perf_context_switch_rate(double* rate) {
PRAGMA_DIAG_PUSH
PRAGMA_ZERO_AS_NULL_POINTER_CONSTANT_IGNORED
static pthread_mutex_t contextSwitchLock = PTHREAD_MUTEX_INITIALIZER;
PRAGMA_DIAG_POP
static uint64_t bootTime;
static uint64_t lastTimeNanos;
static uint64_t lastSwitches;

8
src/hotspot/os/posix/threadCritical_posix.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2014 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@ -26,6 +26,7 @@
#include "precompiled.hpp"
#include "runtime/javaThread.hpp"
#include "runtime/threadCritical.hpp"
#include "utilities/compilerWarnings.hpp"
// put OS-includes here
# include <pthread.h>
@ -35,7 +36,12 @@
//
static pthread_t tc_owner = 0;
PRAGMA_DIAG_PUSH
PRAGMA_ZERO_AS_NULL_POINTER_CONSTANT_IGNORED
static pthread_mutex_t tc_mutex = PTHREAD_MUTEX_INITIALIZER;
PRAGMA_DIAG_POP
static int tc_count = 0;
ThreadCritical::ThreadCritical() {

6
src/hotspot/share/utilities/compilerWarnings.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2017, 2024, 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
@ -82,6 +82,10 @@
#define PRAGMA_NONNULL_IGNORED
#endif
#ifndef PRAGMA_ZERO_AS_NULL_POINTER_CONSTANT_IGNORED
#define PRAGMA_ZERO_AS_NULL_POINTER_CONSTANT_IGNORED
#endif
// Support warnings for use of certain C functions, except where explicitly
// permitted.
//

5
src/hotspot/share/utilities/compilerWarnings_gcc.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2017, 2024, 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
@ -67,6 +67,9 @@
#define PRAGMA_NONNULL_IGNORED PRAGMA_DISABLE_GCC_WARNING("-Wnonnull")
#define PRAGMA_ZERO_AS_NULL_POINTER_CONSTANT_IGNORED \
PRAGMA_DISABLE_GCC_WARNING("-Wzero-as-null-pointer-constant")
#if (__GNUC__ >= 10)
// TODO: Re-enable warning attribute for Clang once
// https://github.com/llvm/llvm-project/issues/56519 is fixed and released.