+++ /dev/null
-/* -----------------------------------------------------------------------------
- *
- * (c) The GHC Team, 1998-2004
- *
- * General utility functions used in the RTS.
- *
- * ---------------------------------------------------------------------------*/
-
-/* gettimeofday isn't POSIX */
-/* #include "PosixSource.h" */
-
-#include "Rts.h"
-#include "RtsAPI.h"
-#include "RtsFlags.h"
-#include "RtsUtils.h"
-#include "Ticky.h"
-
-#ifdef HAVE_TIME_H
-#include <time.h>
-#endif
-
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-
-#ifdef HAVE_GETTIMEOFDAY
-#include <sys/time.h>
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <stdio.h>
-
-#ifdef HAVE_SIGNAL_H
-#include <signal.h>
-#endif
-
-#if defined(THREADED_RTS) && defined(openbsd_HOST_OS) && defined(HAVE_PTHREAD_H)
-#include <pthread.h>
-#endif
-
-#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
-
-#if defined(_WIN32)
-#include <windows.h>
-#endif
-
-/* -----------------------------------------------------------------------------
- Result-checking malloc wrappers.
- -------------------------------------------------------------------------- */
-
-void *
-stgMallocBytes (int n, char *msg)
-{
- char *space;
-
- if ((space = (char *) malloc((size_t) n)) == NULL) {
- /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- MallocFailHook((W_) n, msg); /*msg*/
- stg_exit(EXIT_INTERNAL_ERROR);
- }
- return space;
-}
-
-void *
-stgReallocBytes (void *p, int n, char *msg)
-{
- char *space;
-
- if ((space = (char *) realloc(p, (size_t) n)) == NULL) {
- /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- MallocFailHook((W_) n, msg); /*msg*/
- stg_exit(EXIT_INTERNAL_ERROR);
- }
- return space;
-}
-
-void *
-stgCallocBytes (int n, int m, char *msg)
-{
- char *space;
-
- 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;
-}
-
-/* To simplify changing the underlying allocator used
- * by stgMallocBytes(), provide stgFree() as well.
- */
-void
-stgFree(void* p)
-{
- free(p);
-}
-
-/* -----------------------------------------------------------------------------
- Stack overflow
-
- Not sure if this belongs here.
- -------------------------------------------------------------------------- */
-
-void
-stackOverflow(void)
-{
- StackOverflowHook(RtsFlags.GcFlags.maxStkSize * sizeof(W_));
-
-#if defined(TICKY_TICKY)
- if (RtsFlags.TickyFlags.showTickyStats) PrintTickyInfo();
-#endif
-}
-
-void
-heapOverflow(void)
-{
- /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- OutOfHeapHook(0/*unknown request size*/,
- RtsFlags.GcFlags.maxHeapSize * BLOCK_SIZE);
-
-#if defined(TICKY_TICKY)
- if (RtsFlags.TickyFlags.showTickyStats) PrintTickyInfo();
-#endif
-
- stg_exit(EXIT_HEAPOVERFLOW);
-}
-
-/* -----------------------------------------------------------------------------
- Out-of-line strlen.
-
- Used in addr2Integer because the C compiler on x86 chokes on
- strlen, trying to inline it with not enough registers available.
- -------------------------------------------------------------------------- */
-
-nat stg_strlen(char *s)
-{
- char *p = s;
-
- while (*p) p++;
- return p-s;
-}
-
-
-/* -----------------------------------------------------------------------------
- genSym stuff, used by GHC itself for its splitting unique supply.
-
- ToDo: put this somewhere sensible.
- ------------------------------------------------------------------------- */
-
-static I_ __GenSymCounter = 0;
-
-I_
-genSymZh(void)
-{
- return(__GenSymCounter++);
-}
-I_
-resetGenSymZh(void) /* it's your funeral */
-{
- __GenSymCounter=0;
- return(__GenSymCounter);
-}
-
-/* -----------------------------------------------------------------------------
- Get the current time as a string. Used in profiling reports.
- -------------------------------------------------------------------------- */
-
-#if defined(PROFILING) || defined(DEBUG) || defined(PAR) || defined(GRAN)
-char *
-time_str(void)
-{
- static time_t now = 0;
- static char nowstr[26];
-
- if (now == 0) {
- time(&now);
-#if HAVE_CTIME_R
- ctime_r(&now, nowstr);
-#else
- strcpy(nowstr, ctime(&now));
-#endif
- memmove(nowstr+16,nowstr+19,7);
- nowstr[21] = '\0'; // removes the \n
- }
- return nowstr;
-}
-#endif
-
-/* -----------------------------------------------------------------------------
- * Reset a file handle to blocking mode. We do this for the standard
- * file descriptors before exiting, because the shell doesn't always
- * clean up for us.
- * -------------------------------------------------------------------------- */
-
-#if !defined(mingw32_HOST_OS)
-void
-resetNonBlockingFd(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);
- }
-}
-
-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_HOST_ARCH) && !defined(hppa1_1_HOST_ARCH)
- struct timespec tv;
-
- if (getclock(TIMEOFDAY, &tv) != 0) {
- fflush(stdout);
- fprintf(stderr, "Clock failed\n");
- stg_exit(EXIT_FAILURE);
- }
- return tv.tv_sec * LL(1000) + tv.tv_nsec / LL(1000000) - startTime;
-# elif HAVE_GETTIMEOFDAY && !defined(alpha_HOST_ARCH)
- struct timeval tv;
-
- if (gettimeofday(&tv, NULL) != 0) {
- fflush(stdout);
- fprintf(stderr, "Clock failed\n");
- stg_exit(EXIT_FAILURE);
- }
- return tv.tv_sec * LL(1000) + tv.tv_usec / LL(1000) - startTime;
-# else
- time_t t;
- if ((t = time(NULL)) == (time_t) -1) {
- fflush(stdout);
- fprintf(stderr, "Clock failed\n");
- stg_exit(EXIT_FAILURE);
- }
- return t * LL(1000) - startTime;
-# endif
-}
-#endif /* PAR */
-
-/* -----------------------------------------------------------------------------
- Print large numbers, with punctuation.
- -------------------------------------------------------------------------- */
-
-char *
-ullong_format_string(ullong x, char *s, rtsBool with_commas)
-{
- if (x < (ullong)1000)
- sprintf(s, "%lu", (lnat)x);
- else if (x < (ullong)1000000)
- 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) ? "%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) ? "%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;
-}
projects / ghc-hetmet.git / blobdiff