1 /* $NetBSD: emalloc.c,v 1.2 2012/02/04 16:31:02 christos Exp $ */ 2 3 /* 4 * emalloc - return new memory obtained from the system. Belch if none. 5 */ 6 #include <config.h> 7 #include "ntp_types.h" 8 #include "ntp_malloc.h" 9 #include "ntp_syslog.h" 10 #include "ntp_stdlib.h" 11 12 13 /* 14 * When using the debug MS CRT allocator, each allocation stores the 15 * callsite __FILE__ and __LINE__, which is then displayed at process 16 * termination, to track down leaks. We don't want all of our 17 * allocations to show up as coming from emalloc.c, so we preserve the 18 * original callsite's source file and line using macros which pass 19 * __FILE__ and __LINE__ as parameters to these routines. 20 * Other debug malloc implementations can be used by defining 21 * EREALLOC_IMPL() as ports/winnt/include/config.h does. 22 */ 23 24 void * 25 ereallocz( 26 void * ptr, 27 size_t newsz, 28 size_t priorsz, 29 int zero_init 30 #ifdef EREALLOC_CALLSITE /* ntp_malloc.h */ 31 , 32 const char * file, 33 int line 34 #endif 35 ) 36 { 37 char * mem; 38 size_t allocsz; 39 40 if (0 == newsz) 41 allocsz = 1; 42 else 43 allocsz = newsz; 44 45 mem = EREALLOC_IMPL(ptr, allocsz, file, line); 46 if (NULL == mem) { 47 msyslog_term = TRUE; 48 #ifndef EREALLOC_CALLSITE 49 msyslog(LOG_ERR, "fatal out of memory (%lu bytes)", 50 (u_long)newsz); 51 #else 52 msyslog(LOG_ERR, 53 "fatal out of memory %s line %d (%lu bytes)", 54 file, line, (u_long)newsz); 55 #endif 56 exit(1); 57 } 58 59 if (zero_init && newsz > priorsz) 60 zero_mem(mem + priorsz, newsz - priorsz); 61 62 return mem; 63 } 64 65 66 char * 67 estrdup_impl( 68 const char * str 69 #ifdef EREALLOC_CALLSITE 70 , 71 const char * file, 72 int line 73 #endif 74 ) 75 { 76 char * copy; 77 size_t bytes; 78 79 bytes = strlen(str) + 1; 80 copy = ereallocz(NULL, bytes, 0, FALSE 81 #ifdef EREALLOC_CALLSITE 82 , file, line 83 #endif 84 ); 85 memcpy(copy, str, bytes); 86 87 return copy; 88 } 89 90 91 #if 0 92 #ifndef EREALLOC_CALLSITE 93 void * 94 emalloc(size_t newsz) 95 { 96 return ereallocz(NULL, newsz, 0, FALSE); 97 } 98 #endif 99 #endif 100 101