/* -----------------------------------------------------------------------------
- * $Id: RtsUtils.c,v 1.18 2001/02/13 11:10:28 rrt Exp $
*
- * (c) The GHC Team, 1998-1999
+ * (c) The GHC Team, 1998-2004
*
* General utility functions used in the RTS.
*
* ---------------------------------------------------------------------------*/
/* gettimeofday isn't POSIX */
-#define NON_POSIX_SOURCE
+/* #include "PosixSource.h" */
#include "Rts.h"
-#include "RtsTypes.h"
#include "RtsAPI.h"
#include "RtsFlags.h"
-#include "Hooks.h"
-#include "Main.h"
#include "RtsUtils.h"
#include "Ticky.h"
#include <sys/time.h>
#endif
+#include <stdlib.h>
+#include <string.h>
#include <stdarg.h>
+#include <stdio.h>
-/* variable-argument error function. */
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
-void barf(char *s, ...)
-{
- va_list ap;
- va_start(ap,s);
- /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- if (prog_argv != NULL && prog_argv[0] != NULL) {
- fprintf(stderr, "%s: fatal error: ", prog_argv[0]);
- } else {
- fprintf(stderr, "fatal error: ");
- }
- vfprintf(stderr, s, ap);
- fprintf(stderr, "\n");
- fflush(stderr);
- stg_exit(EXIT_INTERNAL_ERROR);
-}
+#if defined(THREADED_RTS) && defined(openbsd_HOST_OS) && defined(HAVE_PTHREAD_H)
+#include <pthread.h>
+#endif
-void prog_belch(char *s, ...)
-{
- va_list ap;
- va_start(ap,s);
- /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- if (prog_argv != NULL && prog_argv[0] != NULL) {
- fprintf(stderr, "%s: ", prog_argv[0]);
- }
- vfprintf(stderr, s, ap);
- fprintf(stderr, "\n");
-}
+#if defined(openbsd_HOST_OS) || defined(linux_HOST_OS) || defined(darwin_HOST_OS)
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+
+/* no C99 header stdint.h on OpenBSD? */
+#if defined(openbsd_HOST_OS)
+typedef unsigned long my_uintptr_t;
+#else
+#include <stdint.h>
+typedef uintptr_t my_uintptr_t;
+#endif
+#endif
-void belch(char *s, ...)
-{
- va_list ap;
- va_start(ap,s);
- /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- vfprintf(stderr, s, ap);
- fprintf(stderr, "\n");
-}
+#if defined(_WIN32)
+#include <windows.h>
+#endif
-/* result-checking malloc wrappers. */
+/* -----------------------------------------------------------------------------
+ Result-checking malloc wrappers.
+ -------------------------------------------------------------------------- */
void *
stgMallocBytes (int n, char *msg)
}
void *
-stgMallocWords (int n, char *msg)
+stgCallocBytes (int n, int m, char *msg)
{
- return(stgMallocBytes(n * sizeof(W_), msg));
-}
+ char *space;
-void *
-stgReallocWords (void *p, int n, char *msg)
-{
- return(stgReallocBytes(p, n * sizeof(W_), msg));
+ if ((space = (char *) calloc((size_t) n, (size_t) m)) == NULL) {
+ /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
+ MallocFailHook((W_) n*m, msg); /*msg*/
+ stg_exit(EXIT_INTERNAL_ERROR);
+ }
+ return space;
}
-void
-_stgAssert (char *filename, nat linenum)
+/* To simplify changing the underlying allocator used
+ * by stgMallocBytes(), provide stgFree() as well.
+ */
+void
+stgFree(void* p)
{
- fflush(stdout);
- fprintf(stderr, "ASSERTION FAILED: file %s, line %u\n", filename, linenum);
- fflush(stderr);
- abort();
+ free(p);
}
/* -----------------------------------------------------------------------------
ToDo: put this somewhere sensible.
------------------------------------------------------------------------- */
-I_ __GenSymCounter = 0;
+static I_ __GenSymCounter = 0;
I_
genSymZh(void)
if (now == 0) {
time(&now);
+#if HAVE_CTIME_R
+ ctime_r(&now, nowstr);
+#else
strcpy(nowstr, ctime(&now));
- strcpy(nowstr+16,nowstr+19);
- nowstr[21] = '\0';
+#endif
+ memmove(nowstr+16,nowstr+19,7);
+ nowstr[21] = '\0'; // removes the \n
}
return nowstr;
}
* clean up for us.
* -------------------------------------------------------------------------- */
+#if !defined(mingw32_HOST_OS)
void
resetNonBlockingFd(int fd)
{
long fd_flags;
-#if !defined(mingw32_TARGET_OS)
/* clear the non-blocking flag on this file descriptor */
fd_flags = fcntl(fd, F_GETFL);
if (fd_flags & O_NONBLOCK) {
fcntl(fd, F_SETFL, fd_flags & ~O_NONBLOCK);
}
-#endif
}
+void
+setNonBlockingFd(int fd)
+{
+ long fd_flags;
+
+ /* clear the non-blocking flag on this file descriptor */
+ fd_flags = fcntl(fd, F_GETFL);
+ if (!(fd_flags & O_NONBLOCK)) {
+ fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
+ }
+}
+#else
+/* Stub defns -- async / non-blocking IO is not done
+ * via O_NONBLOCK and select() under Win32.
+ */
+void resetNonBlockingFd(int fd STG_UNUSED) {}
+void setNonBlockingFd(int fd STG_UNUSED) {}
+#endif
+
+#ifdef PAR
static ullong startTime = 0;
/* used in a parallel setup */
ullong
msTime(void)
{
-# if defined(HAVE_GETCLOCK) && !defined(alpha_TARGET_ARCH) && !defined(hppa1_1_TARGET_ARCH)
+# if defined(HAVE_GETCLOCK) && !defined(alpha_HOST_ARCH) && !defined(hppa1_1_HOST_ARCH)
struct timespec tv;
if (getclock(TIMEOFDAY, &tv) != 0) {
stg_exit(EXIT_FAILURE);
}
return tv.tv_sec * LL(1000) + tv.tv_nsec / LL(1000000) - startTime;
-# elif HAVE_GETTIMEOFDAY && !defined(alpha_TARGET_ARCH)
+# elif HAVE_GETTIMEOFDAY && !defined(alpha_HOST_ARCH)
struct timeval tv;
if (gettimeofday(&tv, NULL) != 0) {
return t * LL(1000) - startTime;
# endif
}
+#endif /* PAR */
/* -----------------------------------------------------------------------------
Print large numbers, with punctuation.
ullong_format_string(ullong x, char *s, rtsBool with_commas)
{
if (x < (ullong)1000)
- sprintf(s, "%d", (nat)x);
+ sprintf(s, "%lu", (lnat)x);
else if (x < (ullong)1000000)
- sprintf(s, (with_commas) ? "%ld,%3.3ld" : "%ld%3.3ld",
- (nat)((x)/(ullong)1000),
- (nat)((x)%(ullong)1000));
+ sprintf(s, (with_commas) ? "%lu,%3.3lu" : "%lu%3.3lu",
+ (lnat)((x)/(ullong)1000),
+ (lnat)((x)%(ullong)1000));
else if (x < (ullong)1000000000)
- sprintf(s, (with_commas) ? "%ld,%3.3ld,%3.3ld" : "%ld%3.3ld%3.3ld",
- (nat)((x)/(ullong)1000000),
- (nat)((x)/(ullong)1000%(ullong)1000),
- (nat)((x)%(ullong)1000));
+ sprintf(s, (with_commas) ? "%lu,%3.3lu,%3.3lu" : "%lu%3.3lu%3.3lu",
+ (lnat)((x)/(ullong)1000000),
+ (lnat)((x)/(ullong)1000%(ullong)1000),
+ (lnat)((x)%(ullong)1000));
else
- sprintf(s, (with_commas) ? "%ld,%3.3ld,%3.3ld,%3.3ld" : "%ld%3.3ld%3.3ld%3.3ld",
- (nat)((x)/(ullong)1000000000),
- (nat)((x)/(ullong)1000000%(ullong)1000),
- (nat)((x)/(ullong)1000%(ullong)1000),
- (nat)((x)%(ullong)1000));
+ sprintf(s, (with_commas) ? "%lu,%3.3lu,%3.3lu,%3.3lu" : "%lu%3.3lu%3.3lu%3.3lu",
+ (lnat)((x)/(ullong)1000000000),
+ (lnat)((x)/(ullong)1000000%(ullong)1000),
+ (lnat)((x)/(ullong)1000%(ullong)1000),
+ (lnat)((x)%(ullong)1000));
return s;
}
+
+
+// Can be used as a breakpoint to set on every heap check failure.
+#ifdef DEBUG
+void
+heapCheckFail( void )
+{
+}
+#endif
+
+/*
+ * It seems that pthreads and signals interact oddly in OpenBSD & FreeBSD
+ * pthreads (and possibly others). When linking with -lpthreads, we
+ * have to use pthread_kill to send blockable signals. So use that
+ * when we have a threaded rts. So System.Posix.Signals will call
+ * genericRaise(), rather than raise(3).
+ */
+int genericRaise(int sig) {
+#if defined(THREADED_RTS) && (defined(openbsd_HOST_OS) || defined(freebsd_HOST_OS))
+ return pthread_kill(pthread_self(), sig);
+#else
+ return raise(sig);
+#endif
+}
+
+/* -----------------------------------------------------------------------------
+ Allocating executable memory
+ -------------------------------------------------------------------------- */
+
+/* Heavily arch-specific, I'm afraid.. */
+
+/*
+ * Allocate len bytes which are readable, writable, and executable.
+ *
+ * ToDo: If this turns out to be a performance bottleneck, one could
+ * e.g. cache the last VirtualProtect/mprotect-ed region and do
+ * nothing in case of a cache hit.
+ */
+void*
+stgMallocBytesRWX(int len)
+{
+ void *addr = stgMallocBytes(len, "mallocBytesRWX");
+#if defined(i386_HOST_ARCH) && defined(_WIN32)
+ /* This could be necessary for processors which distinguish between READ and
+ EXECUTE memory accesses, e.g. Itaniums. */
+ DWORD dwOldProtect = 0;
+ if (VirtualProtect (addr, len, PAGE_EXECUTE_READWRITE, &dwOldProtect) == 0) {
+ barf("mallocBytesRWX: failed to protect 0x%p; error=%lu; old protection: %lu\n",
+ addr, (unsigned long)GetLastError(), (unsigned long)dwOldProtect);
+ }
+#elif defined(openbsd_HOST_OS) || defined(linux_HOST_OS) || defined(darwin_HOST_OS)
+ /* malloced memory isn't executable by default on OpenBSD */
+ my_uintptr_t pageSize = sysconf(_SC_PAGESIZE);
+ my_uintptr_t mask = ~(pageSize - 1);
+ my_uintptr_t startOfFirstPage = ((my_uintptr_t)addr ) & mask;
+ my_uintptr_t startOfLastPage = ((my_uintptr_t)addr + len - 1) & mask;
+ my_uintptr_t size = startOfLastPage - startOfFirstPage + pageSize;
+ if (mprotect((void*)startOfFirstPage, (size_t)size, PROT_EXEC | PROT_READ | PROT_WRITE) != 0) {
+ barf("mallocBytesRWX: failed to protect 0x%p\n", addr);
+ }
+#endif
+ return addr;
+}
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