forked from OSchip/llvm-project
107 lines
2.1 KiB
C
107 lines
2.1 KiB
C
/* wait.c -- functions for getting wait status values.
|
|
|
|
Copyright 2011 The Go Authors. All rights reserved.
|
|
Use of this source code is governed by a BSD-style
|
|
license that can be found in the LICENSE file.
|
|
|
|
We use C code to extract the wait status so that we can easily be
|
|
OS-independent. */
|
|
|
|
#include <stdint.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include "runtime.h"
|
|
|
|
extern _Bool Exited (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.Exited.N18_syscall.WaitStatus");
|
|
|
|
_Bool
|
|
Exited (uint32_t *w)
|
|
{
|
|
return WIFEXITED (*w) != 0;
|
|
}
|
|
|
|
extern _Bool Signaled (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.Signaled.N18_syscall.WaitStatus");
|
|
|
|
_Bool
|
|
Signaled (uint32_t *w)
|
|
{
|
|
return WIFSIGNALED (*w) != 0;
|
|
}
|
|
|
|
extern _Bool Stopped (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.Stopped.N18_syscall.WaitStatus");
|
|
|
|
_Bool
|
|
Stopped (uint32_t *w)
|
|
{
|
|
return WIFSTOPPED (*w) != 0;
|
|
}
|
|
|
|
extern _Bool Continued (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.Continued.N18_syscall.WaitStatus");
|
|
|
|
_Bool
|
|
Continued (uint32_t *w)
|
|
{
|
|
return WIFCONTINUED (*w) != 0;
|
|
}
|
|
|
|
extern _Bool CoreDump (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.CoreDump.N18_syscall.WaitStatus");
|
|
|
|
_Bool
|
|
CoreDump (uint32_t *w)
|
|
{
|
|
return WCOREDUMP (*w) != 0;
|
|
}
|
|
|
|
extern int ExitStatus (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.ExitStatus.N18_syscall.WaitStatus");
|
|
|
|
int
|
|
ExitStatus (uint32_t *w)
|
|
{
|
|
if (!WIFEXITED (*w))
|
|
return -1;
|
|
return WEXITSTATUS (*w);
|
|
}
|
|
|
|
extern int Signal (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.Signal.N18_syscall.WaitStatus");
|
|
|
|
int
|
|
Signal (uint32_t *w)
|
|
{
|
|
if (!WIFSIGNALED (*w))
|
|
return -1;
|
|
return WTERMSIG (*w);
|
|
}
|
|
|
|
extern int StopSignal (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.StopSignal.N18_syscall.WaitStatus");
|
|
|
|
int
|
|
StopSignal (uint32_t *w)
|
|
{
|
|
if (!WIFSTOPPED (*w))
|
|
return -1;
|
|
return WSTOPSIG (*w);
|
|
}
|
|
|
|
extern int TrapCause (uint32_t *w)
|
|
__asm__ (GOSYM_PREFIX "syscall.TrapCause.N18_syscall.WaitStatus");
|
|
|
|
int
|
|
TrapCause (uint32_t *w __attribute__ ((unused)))
|
|
{
|
|
#ifndef __linux__
|
|
return -1;
|
|
#else
|
|
if (!WIFSTOPPED (*w) || WSTOPSIG (*w) != SIGTRAP)
|
|
return -1;
|
|
return *w >> 16;
|
|
#endif
|
|
}
|