X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=util%2Fnmem.c;h=8415772319d2488afaf0dfff47cd7cebfa60f7fa;hp=a9646fb737132a8f7b0306752b331480354213a4;hb=4d531a1a9131d69c3b6c27fbac42837e22cff61c;hpb=f93804a685b51e2d724847d071d47c173c2c0ee6 diff --git a/util/nmem.c b/util/nmem.c index a9646fb..8415772 100644 --- a/util/nmem.c +++ b/util/nmem.c @@ -1,82 +1,9 @@ /* - * Copyright (c) 1995-2000, Index Data. + * Copyright (c) 1995-2003, Index Data. * See the file LICENSE for details. * Sebastian Hammer, Adam Dickmeiss * - * $Log: nmem.c,v $ - * Revision 1.22 2000-05-03 22:00:00 adam - * Reference counter (if multiple modules are init/freeing nmem). - * - * Revision 1.21 2000/02/29 13:44:55 adam - * Check for config.h (currently not generated). - * - * Revision 1.20 2000/01/06 14:59:13 adam - * Added oid_init/oid_exit. Changed oid_exit. - * - * Revision 1.19 1999/11/30 13:47:12 adam - * Improved installation. Moved header files to include/yaz. - * - * Revision 1.18 1999/08/27 09:40:32 adam - * Renamed logf function to yaz_log. Removed VC++ project files. - * - * Revision 1.17 1999/07/13 13:28:25 adam - * Better debugging for NMEM routines. - * - * Revision 1.16 1999/03/31 11:18:25 adam - * Implemented odr_strdup. Added Reference ID to backend server API. - * - * Revision 1.15 1999/02/11 09:10:26 adam - * Function nmem_init only mandatory on Windows. - * - * Revision 1.14 1999/02/02 13:57:40 adam - * Uses preprocessor define WIN32 instead of WINDOWS to build code - * for Microsoft WIN32. - * - * Revision 1.13 1998/10/19 15:24:21 adam - * New nmem utility, nmem_transfer, that transfer blocks from one - * NMEM to another. - * - * Revision 1.12 1998/10/13 16:00:18 adam - * Implemented nmem_critical_{enter,leave}. - * - * Revision 1.11 1998/08/21 14:13:36 adam - * Added GNU Configure script to build Makefiles. - * - * Revision 1.10 1998/07/20 12:35:57 adam - * Added more memory diagnostics (when NMEM_DEBUG is 1). - * - * Revision 1.9 1998/07/07 15:49:01 adam - * Reduced chunk size. - * - * Revision 1.8 1998/07/03 14:21:27 adam - * Added critical sections for pthreads-library. Thanks to Ian Ibbotson, - * Fretwell Downing Informatics. - * - * Revision 1.7 1998/02/11 11:53:36 adam - * Changed code so that it compiles as C++. - * - * Revision 1.6 1997/10/31 12:20:09 adam - * Improved memory debugging for xmalloc/nmem.c. References to NMEM - * instead of ODR in n ESPEC-1 handling in source d1_espec.c. - * Bug fix: missing fclose in data1_read_espec1. - * - * Revision 1.5 1997/10/06 09:09:52 adam - * Function mmem_exit releases memory used by the freelists. - * - * Revision 1.4 1997/09/29 07:12:50 adam - * NMEM thread safe. NMEM must be initialized before use (sigh) - - * routine nmem_init/nmem_exit implemented. - * - * Revision 1.3 1997/07/21 12:47:38 adam - * Moved definition of nmem_control and nmem_block. - * - * Revision 1.2 1995/12/13 13:44:37 quinn - * Modified Data1-system to use nmem - * - * Revision 1.1 1995/11/13 09:27:52 quinn - * Fiddling with the variant stuff. - * - * + * $Id: nmem.c,v 1.39 2003-01-06 08:20:28 adam Exp $ */ /* @@ -89,19 +16,22 @@ #include #include +#include #include #include #include +#include + #ifdef WIN32 #include -#elif _REENTRANT +#endif -#if HAVE_PTHREAD_H +#if YAZ_POSIX_THREADS #include -#elif HAVE_THREAD_H -#include #endif +#if YAZ_GNU_THREADS +#include #endif #define NMEM_CHUNK (4*1024) @@ -110,29 +40,100 @@ static CRITICAL_SECTION critical_section; #define NMEM_ENTER EnterCriticalSection(&critical_section) #define NMEM_LEAVE LeaveCriticalSection(&critical_section) -#elif _REENTRANT +struct nmem_mutex { + CRITICAL_SECTION m_handle; +}; +#elif YAZ_POSIX_THREADS static pthread_mutex_t nmem_mutex = PTHREAD_MUTEX_INITIALIZER; #define NMEM_ENTER pthread_mutex_lock(&nmem_mutex); #define NMEM_LEAVE pthread_mutex_unlock(&nmem_mutex); +struct nmem_mutex { + pthread_mutex_t m_handle; +}; +#elif YAZ_GNU_THREADS +static pth_mutex_t nmem_mutex = PTH_MUTEX_INIT; +#define NMEM_ENTER pth_mutex_acquire(&nmem_mutex, 0, 0) +#define NMEM_LEAVE pth_mutex_release(&nmem_mutex) +struct nmem_mutex { + pth_mutex_t m_handle; +}; #else #define NMEM_ENTER #define NMEM_LEAVE +struct nmem_mutex { + int dummy; +}; #endif +YAZ_EXPORT void nmem_mutex_create(NMEM_MUTEX *p) +{ + NMEM_ENTER; + if (!*p) + { + *p = (NMEM_MUTEX) malloc (sizeof(**p)); +#ifdef WIN32 + InitializeCriticalSection(&(*p)->m_handle); +#elif YAZ_POSIX_THREADS + pthread_mutex_init (&(*p)->m_handle, 0); +#elif YAZ_GNU_THREADS + pth_mutex_init (&(*p)->m_handle); +#endif + } + NMEM_LEAVE; +} + +YAZ_EXPORT void nmem_mutex_enter(NMEM_MUTEX p) +{ + if (p) + { +#ifdef WIN32 + EnterCriticalSection(&p->m_handle); +#elif YAZ_POSIX_THREADS + pthread_mutex_lock(&p->m_handle); +#endif + } +} + +YAZ_EXPORT void nmem_mutex_leave(NMEM_MUTEX p) +{ + if (p) + { +#ifdef WIN32 + LeaveCriticalSection(&p->m_handle); +#elif YAZ_POSIX_THREADS + pthread_mutex_unlock(&p->m_handle); +#endif + } +} + +YAZ_EXPORT void nmem_mutex_destroy(NMEM_MUTEX *p) +{ + NMEM_ENTER; + if (*p) + { +#ifdef WIN32 + DeleteCriticalSection(&(*p)->m_handle); +#endif + free (*p); + *p = 0; + } + NMEM_LEAVE; +} + static nmem_block *freelist = NULL; /* "global" freelists */ static nmem_control *cfreelist = NULL; static int nmem_active_no = 0; static int nmem_init_flag = 0; #if NMEM_DEBUG -struct nmem_debug { +struct nmem_debug_info { void *p; char file[40]; int line; - struct nmem_debug *next; + struct nmem_debug_info *next; }; -struct nmem_debug *nmem_debug_list = 0; +struct nmem_debug_info *nmem_debug_list = 0; #endif static void free_block(nmem_block *p) @@ -147,12 +148,13 @@ static void free_block(nmem_block *p) #if NMEM_DEBUG void nmem_print_list (void) { - struct nmem_debug *p; + struct nmem_debug_info *p; yaz_log (LOG_DEBUG, "nmem print list"); NMEM_ENTER; for (p = nmem_debug_list; p; p = p->next) - yaz_log (LOG_DEBUG, " %s:%d p=%p", p->file, p->line, p->p); + yaz_log (LOG_DEBUG, " %s:%d p=%p size=%d", p->file, p->line, p->p, + nmem_total(p->p)); NMEM_LEAVE; } #endif @@ -230,8 +232,8 @@ void *nmem_malloc(NMEM n, int size) #endif if (!n) { + yaz_log (LOG_FATAL, "calling nmem_malloc with an null pointer"); abort (); - return xmalloc(size); } #ifdef WIN32 assert (nmem_init_flag); @@ -265,7 +267,7 @@ NMEM nmem_create(void) { NMEM r; #if NMEM_DEBUG - struct nmem_debug *debug_p; + struct nmem_debug_info *debug_p; #endif NMEM_ENTER; @@ -312,7 +314,7 @@ void nmem_destroy(NMEM n) #endif { #if NMEM_DEBUG - struct nmem_debug **debug_p; + struct nmem_debug_info **debug_p; int ok = 0; #endif if (!n) @@ -325,7 +327,7 @@ void nmem_destroy(NMEM n) for (debug_p = &nmem_debug_list; *debug_p; debug_p = &(*debug_p)->next) if ((*debug_p)->p == n) { - struct nmem_debug *debug_save = *debug_p; + struct nmem_debug_info *debug_save = *debug_p; *debug_p = (*debug_p)->next; xfree (debug_save); ok = 1; @@ -377,6 +379,9 @@ void nmem_init (void) { #ifdef WIN32 InitializeCriticalSection(&critical_section); +#elif YAZ_GNU_THREADS + yaz_log (LOG_LOG, "pth_init"); + pth_init (); #endif nmem_active_no = 0; freelist = NULL; @@ -388,6 +393,7 @@ void nmem_exit (void) { if (--nmem_init_flag == 0) { + oid_exit(); while (freelist) { struct nmem_block *fl = freelist; @@ -407,3 +413,61 @@ void nmem_exit (void) } } + +#ifdef WIN32 +BOOL WINAPI DllMain (HINSTANCE hinstDLL, + DWORD reason, + LPVOID reserved) +{ + switch (reason) + { + case DLL_PROCESS_ATTACH: + nmem_init (); + break; + case DLL_PROCESS_DETACH: + nmem_exit (); + } + return TRUE; +} +#endif + +int yaz_errno(void) +{ + return errno; +} + +void yaz_set_errno(int v) +{ + errno = v; +} + +void yaz_strerror(char *buf, int max) +{ + char *cp; +#ifdef WIN32 + DWORD err = GetLastError(); + if (err) + { + FormatMessage( + FORMAT_MESSAGE_FROM_SYSTEM, + NULL, + err, + MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language + (LPTSTR) buf, + max-1, + NULL); + } + else + *buf = '\0'; +#else +#if HAVE_STRERROR_R + strerror_r(errno, buf, max); +#else + strcpy(buf, strerror(yaz_errno())); +#endif +#endif + if ((cp=strrchr(buf, '\n'))) + *cp = '\0'; + if ((cp=strrchr(buf, '\r'))) + *cp = '\0'; +}