|
N-sim
Emulation and simulation of Wireless Sensor Networks |
|
|
|
Hosted by |
/home/brennan/n-sim/Vaike/linux/system-addons/networking/mesh_analysis.c
Go to the documentation of this file.00001 00014 /* 00015 * Copyright 2007. Los Alamos National Security, LLC. This material 00016 * was produced under U.S. Government contract DE-AC52-06NA25396 for 00017 * Los Alamos National Laboratory (LANL), which is operated by Los 00018 * Alamos National Security, LLC, for the Department of Energy. The 00019 * U.S. Government has rights to use, reproduce, and distribute this 00020 * software. NEITHER THE GOVERNMENT NOR LOS ALAMOS NATIONAL SECURITY, 00021 * LLC, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LEGAL 00022 * LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified to 00023 * produce derivative works, such modified software should be clearly 00024 * marked, so as not to confuse it with the version available from LANL. 00025 * 00026 * Additionally, this program is free software; you can redistribute 00027 * it and/or modify it under the terms of the GNU General Public 00028 * License as published by the Free Software Foundation; version 2 of 00029 * the License. Accordingly, this program is distributed in the hope 00030 * it will be useful, but WITHOUT ANY WARRANTY; without even the 00031 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00032 * PURPOSE. See the GNU General Public License for more details. 00033 */ 00034 00035 #include <stdlib.h> 00036 #include <string.h> 00037 #include <dlfcn.h> 00038 #include <errno.h> 00039 #include <sys/time.h> 00040 00041 #include "mesh_analysis.h" 00042 00043 00044 int add_analysis(self_t *self, char *name, int id, char *path, 00045 char *ctl_size_fctn, char *analysis_fctn) 00046 { 00047 analysis_t *anly = malloc(sizeof(analysis_t)); 00048 00049 anly->sensor = self; 00050 strncpy(anly->name, name, ANLY_NAMELEN); 00051 anly->unique_id = id; 00052 00053 if ((anly->lib_handle = dlopen(path, RTLD_LAZY)) == NULL) { 00054 syslog(LOG_ERR, "add_analysis: %s", dlerror()); 00055 free(anly); 00056 return -1; 00057 } 00058 00059 anly->mesh_analysis = dlsym(anly->lib_handle, analysis_fctn); 00060 if ((errstr = dlerror()) != NULL) { 00061 syslog(LOG_ERR, "add_analysis (analysis fctn): %s", errstr); 00062 dlclose(anly->lib_handle); 00063 free(anly); 00064 return -1; 00065 } 00066 00067 if (self->last_a != NULL) 00068 self->last_a->next = anly; 00069 00070 if (self->analyses == NULL) { 00071 self->analyses = anly; 00072 self->last_a = anly; 00073 } 00074 self->last_a = anly; 00075 00076 return 0; 00077 } 00078 00079 00080 int delete_analysis(self_t *self, char *string) 00081 { 00082 analysis_t *prev = NULL, *iter = self->analyses; 00083 while (iter != NULL) { 00084 if (strcasecmp(string, iter->name) == 0) { 00085 if (prev == NULL) 00086 self->analyses = iter->next; 00087 else 00088 prev->next = iter->next; 00089 dlclose(iter->lib_handle); 00090 free(iter); 00091 return 0; 00092 } 00093 prev = iter; 00094 iter = iter->next; 00095 } 00096 return -1; 00097 } 00098 00099 00100 analysis_t *analysis_by_string(self_t *self, char *string) 00101 { 00102 analysis_t *iter = self->analyses; 00103 while (iter != NULL) { 00104 if (strcasecmp(string, iter->name) == 0) 00105 return iter; 00106 iter = iter->next; 00107 } 00108 return NULL; 00109 } 00110 00111 00112 analysis_t *analysis_by_id(self_t *self, int id) 00113 { 00114 analysis_t *iter = self->analyses; 00115 while (iter != NULL) { 00116 if (id == iter->unique_id) 00117 return iter; 00118 iter = iter->next; 00119 } 00120 return NULL; 00121 } 00122 00123 00124 int analyze(self_t *self, struct msghdr *mh) 00125 { 00126 analysis_t *iter = self->analyses; 00127 while (iter != NULL) { 00128 iter->mesh_analysis(mh); 00129 } 00130 }