1 /* -----------------------------------------------------------------------------
3 * (c) The GHC Team, 1998-2004
5 * General utility functions used in the RTS.
7 * ---------------------------------------------------------------------------*/
9 #include "PosixSource.h"
18 /* -----------------------------------------------------------------------------
19 General message generation functions
21 All messages should go through here. We can't guarantee that
22 stdout/stderr will be available - e.g. in a Windows program there
23 is no console for generating messages, so they have to either go to
24 to the debug console, or pop up message boxes.
25 -------------------------------------------------------------------------- */
27 // Default to the stdio implementation of these hooks.
28 RtsMsgFunction *fatalInternalErrorFn = rtsFatalInternalErrorFn;
29 RtsMsgFunction *debugMsgFn = rtsDebugMsgFn;
30 RtsMsgFunction *errorMsgFn = rtsErrorMsgFn;
31 RtsMsgFunction *sysErrorMsgFn = rtsSysErrorMsgFn;
34 barf(const char*s, ...)
38 (*fatalInternalErrorFn)(s,ap);
39 stg_exit(EXIT_INTERNAL_ERROR); // just in case fatalInternalErrorFn() returns
44 vbarf(const char*s, va_list ap)
46 (*fatalInternalErrorFn)(s,ap);
47 stg_exit(EXIT_INTERNAL_ERROR); // just in case fatalInternalErrorFn() returns
51 _assertFail(const char*filename, unsigned int linenum)
53 barf("ASSERTION FAILED: file %s, line %u\n", filename, linenum);
57 errorBelch(const char*s, ...)
66 verrorBelch(const char*s, va_list ap)
72 sysErrorBelch(const char*s, ...)
76 (*sysErrorMsgFn)(s,ap);
81 vsysErrorBelch(const char*s, va_list ap)
83 (*sysErrorMsgFn)(s,ap);
87 debugBelch(const char*s, ...)
96 vdebugBelch(const char*s, va_list ap)
101 /* -----------------------------------------------------------------------------
102 stdio versions of the message functions
103 -------------------------------------------------------------------------- */
107 #if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
111 PIMAGE_DOS_HEADER pDOSHeader;
112 PIMAGE_NT_HEADERS pPEHeader;
114 pDOSHeader = (PIMAGE_DOS_HEADER) GetModuleHandleA(NULL);
115 if (pDOSHeader->e_magic != IMAGE_DOS_SIGNATURE)
118 pPEHeader = (PIMAGE_NT_HEADERS) ((char *)pDOSHeader + pDOSHeader->e_lfanew);
119 if (pPEHeader->Signature != IMAGE_NT_SIGNATURE)
122 return (pPEHeader->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI);
126 #define xstr(s) str(s)
130 rtsFatalInternalErrorFn(const char *s, va_list ap)
132 #if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
135 char title[BUFSIZE], message[BUFSIZE];
137 snprintf(title, BUFSIZE, "%s: internal error", prog_name);
138 vsnprintf(message, BUFSIZE, s, ap);
140 MessageBox(NULL /* hWnd */,
143 MB_OK | MB_ICONERROR | MB_TASKMODAL
149 /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
150 if (prog_argv != NULL && prog_name != NULL) {
151 fprintf(stderr, "%s: internal error: ", prog_name);
153 fprintf(stderr, "internal error: ");
155 vfprintf(stderr, s, ap);
156 fprintf(stderr, "\n");
157 fprintf(stderr, " (GHC version %s for %s)\n", ProjectVersion, xstr(HostPlatform_TYPE));
158 fprintf(stderr, " Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug\n");
163 // stg_exit(EXIT_INTERNAL_ERROR);
167 rtsErrorMsgFn(const char *s, va_list ap)
169 #if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
175 r = vsnprintf(buf, BUFSIZE, s, ap);
176 if (r > 0 && r < BUFSIZE) {
177 MessageBox(NULL /* hWnd */,
180 MB_OK | MB_ICONERROR | MB_TASKMODAL
187 /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
188 if (prog_argv != NULL && prog_name != NULL) {
189 fprintf(stderr, "%s: ", prog_name);
191 vfprintf(stderr, s, ap);
192 fprintf(stderr, "\n");
197 rtsSysErrorMsgFn(const char *s, va_list ap)
201 #if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
203 FORMAT_MESSAGE_ALLOCATE_BUFFER |
204 FORMAT_MESSAGE_FROM_SYSTEM |
205 FORMAT_MESSAGE_IGNORE_INSERTS,
208 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
218 r = vsnprintf(buf, BUFSIZE, s, ap);
219 if (r > 0 && r < BUFSIZE) {
220 r = vsnprintf(buf+r, BUFSIZE-r, ": %s", syserr);
221 MessageBox(NULL /* hWnd */,
224 MB_OK | MB_ICONERROR | MB_TASKMODAL
230 syserr = strerror(errno);
231 // ToDo: use strerror_r() if available
234 /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
235 if (prog_argv != NULL && prog_name != NULL) {
236 fprintf(stderr, "%s: ", prog_name);
238 vfprintf(stderr, s, ap);
240 fprintf(stderr, ": %s\n", syserr);
242 fprintf(stderr, "\n");
246 #if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
247 if (syserr) LocalFree(syserr);
252 rtsDebugMsgFn(const char *s, va_list ap)
254 #if defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
260 r = vsnprintf(buf, BUFSIZE, s, ap);
261 if (r > 0 && r < BUFSIZE) {
262 OutputDebugString(buf);
268 /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
269 vfprintf(stderr, s, ap);