1 #define PETSC_DESIRE_FEATURE_TEST_MACROS /* for getpagesize() with c89 */ 2 #include <petscsys.h> /*I "petscsys.h" I*/ 3 #if defined(PETSC_HAVE_PWD_H) 4 #include <pwd.h> 5 #endif 6 #include <ctype.h> 7 #include <sys/stat.h> 8 #if defined(PETSC_HAVE_UNISTD_H) 9 #include <unistd.h> 10 #endif 11 #if defined(PETSC_HAVE_SYS_UTSNAME_H) 12 #include <sys/utsname.h> 13 #endif 14 #include <fcntl.h> 15 #include <time.h> 16 #if defined(PETSC_HAVE_SYS_SYSTEMINFO_H) 17 #include <sys/systeminfo.h> 18 #endif 19 20 #if defined(PETSC_HAVE_SYS_RESOURCE_H) 21 #include <sys/resource.h> 22 #endif 23 #if defined(PETSC_HAVE_SYS_PROCFS_H) 24 /* #include <sys/int_types.h> Required if using gcc on solaris 2.6 */ 25 #include <sys/procfs.h> 26 #endif 27 #if defined(PETSC_HAVE_FCNTL_H) 28 #include <fcntl.h> 29 #endif 30 31 /*@ 32 PetscMemoryGetCurrentUsage - Returns the current resident set size (memory used) 33 for the program. 34 35 Not Collective 36 37 Output Parameter: 38 . mem - memory usage in bytes 39 40 Options Database Key: 41 . -memory_view - Print memory usage at end of run 42 . -malloc_log - Activate logging of memory usage 43 44 Level: intermediate 45 46 Notes: 47 The memory usage reported here includes all Fortran arrays 48 (that may be used in application-defined sections of code). 49 This routine thus provides a more complete picture of memory 50 usage than PetscMallocGetCurrentUsage() for codes that employ Fortran with 51 hardwired arrays. 52 53 .seealso: PetscMallocGetMaximumUsage(), PetscMemoryGetMaximumUsage(), PetscMallocGetCurrentUsage(), PetscMemorySetGetMaximumUsage(), PetscMemoryView() 54 55 Concepts: resident set size 56 Concepts: memory usage 57 58 @*/ 59 PetscErrorCode PetscMemoryGetCurrentUsage(PetscLogDouble *mem) 60 { 61 #if defined(PETSC_USE_PROCFS_FOR_SIZE) 62 FILE *file; 63 int fd; 64 char proc[PETSC_MAX_PATH_LEN]; 65 prpsinfo_t prusage; 66 #elif defined(PETSC_USE_SBREAK_FOR_SIZE) 67 long *ii = sbreak(0); 68 int fd = ii - (long*)0; 69 #elif defined(PETSC_USE_PROC_FOR_SIZE) && defined(PETSC_HAVE_GETPAGESIZE) 70 FILE *file; 71 char proc[PETSC_MAX_PATH_LEN]; 72 int mm,rss,err; 73 #elif defined(PETSC_HAVE_GETRUSAGE) 74 static struct rusage temp; 75 #endif 76 77 PetscFunctionBegin; 78 #if defined(PETSC_USE_PROCFS_FOR_SIZE) 79 80 sprintf(proc,"/proc/%d",(int)getpid()); 81 if ((fd = open(proc,O_RDONLY)) == -1) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to access system file %s to get memory usage data",file); 82 if (ioctl(fd,PIOCPSINFO,&prusage) == -1) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_READ,"Unable to access system file %s to get memory usage data",file); 83 *mem = (PetscLogDouble)prusage.pr_byrssize; 84 close(fd); 85 86 #elif defined(PETSC_USE_SBREAK_FOR_SIZE) 87 88 *mem = (PetscLogDouble)(8*fd - 4294967296); /* 2^32 - upper bits */ 89 90 #elif defined(PETSC_USE_PROC_FOR_SIZE) && defined(PETSC_HAVE_GETPAGESIZE) 91 sprintf(proc,"/proc/%d/statm",(int)getpid()); 92 if (!(file = fopen(proc,"r"))) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to access system file %s to get memory usage data",proc); 93 if (fscanf(file,"%d %d",&mm,&rss) != 2) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SYS,"Failed to read two integers (mm and rss) from %s",proc); 94 *mem = ((PetscLogDouble)rss) * ((PetscLogDouble)getpagesize()); 95 err = fclose(file); 96 if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file"); 97 98 #elif defined(PETSC_HAVE_GETRUSAGE) 99 getrusage(RUSAGE_SELF,&temp); 100 #if defined(PETSC_USE_KBYTES_FOR_SIZE) 101 *mem = 1024.0 * ((PetscLogDouble)temp.ru_maxrss); 102 #elif defined(PETSC_USE_PAGES_FOR_SIZE) && defined(PETSC_HAVE_GETPAGESIZE) 103 *mem = ((PetscLogDouble)getpagesize())*((PetscLogDouble)temp.ru_maxrss); 104 #else 105 *mem = temp.ru_maxrss; 106 #endif 107 108 #else 109 *mem = 0.0; 110 #endif 111 PetscFunctionReturn(0); 112 } 113 114 PetscBool PetscMemoryCollectMaximumUsage = PETSC_FALSE; 115 PetscLogDouble PetscMemoryMaximumUsage = 0; 116 117 /*@ 118 PetscMemoryGetMaximumUsage - Returns the maximum resident set size (memory used) 119 for the program. 120 121 Not Collective 122 123 Output Parameter: 124 . mem - memory usage in bytes 125 126 Options Database Key: 127 . -memory_view - Print memory usage at end of run 128 . -malloc_log - Activate logging of memory usage 129 130 Level: intermediate 131 132 Notes: 133 The memory usage reported here includes all Fortran arrays 134 (that may be used in application-defined sections of code). 135 This routine thus provides a more complete picture of memory 136 usage than PetscMallocGetCurrentUsage() for codes that employ Fortran with 137 hardwired arrays. 138 139 .seealso: PetscMallocGetMaximumUsage(), PetscMemoryGetCurrentUsage(), PetscMallocGetCurrentUsage(), 140 PetscMemorySetGetMaximumUsage() 141 142 Concepts: resident set size 143 Concepts: memory usage 144 145 @*/ 146 PetscErrorCode PetscMemoryGetMaximumUsage(PetscLogDouble *mem) 147 { 148 PetscFunctionBegin; 149 if (!PetscMemoryCollectMaximumUsage) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"To use this function you must first call PetscMemorySetGetMaximumUsage()"); 150 *mem = PetscMemoryMaximumUsage; 151 PetscFunctionReturn(0); 152 } 153 154 /*@ 155 PetscMemorySetGetMaximumUsage - Tells PETSc to monitor the maximum memory usage so that 156 PetscMemoryGetMaximumUsage() will work. 157 158 Not Collective 159 160 Options Database Key: 161 . -memory_view - Print memory usage at end of run 162 . -malloc_log - Activate logging of memory usage 163 164 Level: intermediate 165 166 .seealso: PetscMallocGetMaximumUsage(), PetscMemoryGetCurrentUsage(), PetscMallocGetCurrentUsage(), 167 PetscMemoryGetMaximumUsage() 168 169 Concepts: resident set size 170 Concepts: memory usage 171 172 @*/ 173 PetscErrorCode PetscMemorySetGetMaximumUsage(void) 174 { 175 PetscFunctionBegin; 176 PetscMemoryCollectMaximumUsage = PETSC_TRUE; 177 PetscFunctionReturn(0); 178 } 179