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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team, 1998-2004
*
* General utility functions used in the RTS.
*
* ---------------------------------------------------------------------------*/
#include "PosixSource.h"
#include "Rts.h"
#include <stdio.h>
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
/* -----------------------------------------------------------------------------
General message generation functions
All messages should go through here. We can't guarantee that
stdout/stderr will be available - e.g. in a Windows program there
is no console for generating messages, so they have to either go to
to the debug console, or pop up message boxes.
-------------------------------------------------------------------------- */
// Default to the stdio implementation of these hooks.
RtsMsgFunction *fatalInternalErrorFn = rtsFatalInternalErrorFn;
RtsMsgFunction *debugMsgFn = rtsDebugMsgFn;
RtsMsgFunction *errorMsgFn = rtsErrorMsgFn;
void
barf(char *s, ...)
{
va_list ap;
va_start(ap,s);
(*fatalInternalErrorFn)(s,ap);
stg_exit(EXIT_INTERNAL_ERROR); // just in case fatalInternalErrorFn() returns
va_end(ap);
}
void
vbarf(char *s, va_list ap)
{
(*fatalInternalErrorFn)(s,ap);
stg_exit(EXIT_INTERNAL_ERROR); // just in case fatalInternalErrorFn() returns
}
void
_assertFail(char *filename, unsigned int linenum)
{
barf("ASSERTION FAILED: file %s, line %u\n", filename, linenum);
}
void
errorBelch(char *s, ...)
{
va_list ap;
va_start(ap,s);
(*errorMsgFn)(s,ap);
va_end(ap);
}
void
verrorBelch(char *s, va_list ap)
{
(*errorMsgFn)(s,ap);
}
void
debugBelch(char *s, ...)
{
va_list ap;
va_start(ap,s);
(*debugMsgFn)(s,ap);
va_end(ap);
}
void
vdebugBelch(char *s, va_list ap)
{
(*debugMsgFn)(s,ap);
}
/* -----------------------------------------------------------------------------
stdio versions of the message functions
-------------------------------------------------------------------------- */
#define BUFSIZE 512
#if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
static int
isGUIApp()
{
PIMAGE_DOS_HEADER pDOSHeader;
PIMAGE_NT_HEADERS pPEHeader;
pDOSHeader = (PIMAGE_DOS_HEADER) GetModuleHandleA(NULL);
if (pDOSHeader->e_magic != IMAGE_DOS_SIGNATURE)
return 0;
pPEHeader = (PIMAGE_NT_HEADERS) ((char *)pDOSHeader + pDOSHeader->e_lfanew);
if (pPEHeader->Signature != IMAGE_NT_SIGNATURE)
return 0;
return (pPEHeader->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI);
}
#endif
#define xstr(s) str(s)
#define str(s) #s
void
rtsFatalInternalErrorFn(char *s, va_list ap)
{
#if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
if (isGUIApp())
{
char title[BUFSIZE], message[BUFSIZE];
snprintf(title, BUFSIZE, "%s: internal error", prog_name);
vsnprintf(message, BUFSIZE, s, ap);
MessageBox(NULL /* hWnd */,
message,
title,
MB_OK | MB_ICONERROR | MB_TASKMODAL
);
}
else
#endif
{
/* don't fflush(stdout); WORKAROUND bug in Linux glibc */
if (prog_argv != NULL && prog_name != NULL) {
fprintf(stderr, "%s: internal error: ", prog_name);
} else {
fprintf(stderr, "internal error: ");
}
vfprintf(stderr, s, ap);
fprintf(stderr, "\n");
fprintf(stderr, " (GHC version %s for %s)\n", ProjectVersion, xstr(HostPlatform_TYPE));
fprintf(stderr, " Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug\n");
fflush(stderr);
}
abort();
// stg_exit(EXIT_INTERNAL_ERROR);
}
void
rtsErrorMsgFn(char *s, va_list ap)
{
#if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
if (isGUIApp())
{
char buf[BUFSIZE];
int r;
r = vsnprintf(buf, BUFSIZE, s, ap);
if (r > 0 && r < BUFSIZE) {
MessageBox(NULL /* hWnd */,
buf,
prog_name,
MB_OK | MB_ICONERROR | MB_TASKMODAL
);
}
}
else
#endif
{
/* don't fflush(stdout); WORKAROUND bug in Linux glibc */
if (prog_argv != NULL && prog_name != NULL) {
fprintf(stderr, "%s: ", prog_name);
}
vfprintf(stderr, s, ap);
fprintf(stderr, "\n");
}
}
void
rtsDebugMsgFn(char *s, va_list ap)
{
#if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
if (isGUIApp())
{
char buf[BUFSIZE];
int r;
r = vsnprintf(buf, BUFSIZE, s, ap);
if (r > 0 && r < BUFSIZE) {
OutputDebugString(buf);
}
}
else
#endif
{
/* don't fflush(stdout); WORKAROUND bug in Linux glibc */
vfprintf(stderr, s, ap);
fflush(stderr);
}
}
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