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1 #include <sys/time.h> |
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2 #include <stdio.h> |
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3 #include <stdlib.h> |
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4 #include <sys/mman.h> |
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5 #include <semaphore.h> |
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6 #include <sys/types.h> |
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7 #include <signal.h> |
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8 #include <execinfo.h> |
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9 #include <string.h> |
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10 #include <unistd.h> |
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11 #include <sys/wait.h> |
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12 #include "Debug.h" |
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13 #define ERR(e) perror(e), kill(0, SIGTERM), exit(EXIT_FAILURE) |
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14 |
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15 // independent utility staff |
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16 |
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17 int DebugC::debug = 0; |
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18 char *DebugC::prg_name; |
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19 long int DebugC::t0; |
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20 sem_t *DebugC::semP; |
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21 |
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22 void DebugC::deb(int level) { |
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23 if (debug >= level) { |
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24 if(sem_wait(semP)< 0) ERR("LOG sem_wait"); |
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25 struct timeval t; |
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26 gettimeofday(&t, NULL); |
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27 fprintf(stderr, "%09ld %s: %s\n", 1000000*t.tv_sec+t.tv_usec-t0, debid, s); |
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28 fflush(stderr); |
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29 if(sem_post(semP) < 0) ERR("LOG sem_post"); |
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30 } |
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31 } |
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32 void DebugC::back_trace() { |
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33 if(sem_wait(semP)< 0) ERR("LOG sem_wait"); |
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34 |
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35 int j, nptrs; |
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36 void *buffer[24]; |
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37 char **strings; |
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38 |
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39 nptrs = backtrace(buffer, 24); |
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40 |
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41 strings = backtrace_symbols(buffer, nptrs); |
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42 if (strings == NULL) { |
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43 ERR("ABORT backtrace_symbols"); |
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44 exit(EXIT_FAILURE); |
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45 } |
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46 |
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47 char shcmd[] = "sed -e 's/.*\\[\\(.*\\)\\]$/\\1/' | addr2line -fspe "; |
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48 char *cmdbuf = (char*)malloc(sizeof(shcmd) + 64); |
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49 strcpy(cmdbuf, shcmd); |
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50 strcat(cmdbuf, prg_name); |
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51 #define SIZE 640 |
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52 char *resbuf = (char*)malloc(SIZE);; |
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53 for(j = 0; j < nptrs; j++) { |
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54 int pc[2], po[2]; |
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55 if(pipe(pc) < 0) ERR("ABORT pipe"); |
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56 if(pipe(po) < 0) ERR("ABORT pipe"); |
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57 if(!fork()) { |
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58 close(po[0]); dup2(po[1],1); |
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59 close(pc[1]); dup2(pc[0],0); |
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60 execl("/bin/bash", "/bin/bash", "-c", cmdbuf, (char *) NULL); |
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61 } |
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62 if(write(pc[1], strings[j], strlen(strings[j])) < 0) ERR("ABORT write pipe"); |
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63 if(write(pc[1], "\n", 1) < 0) ERR("ABORT write pipe"); |
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64 close(pc[1]); |
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65 memset(resbuf, 0, SIZE); |
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66 if(read(po[0], resbuf, SIZE)) fprintf(stderr, "%s", resbuf); |
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67 for(int i = 0; i < 2; i++) close(po[i]), close(pc[i]); |
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68 } |
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69 if(sem_post(semP)< 0) ERR("LOG sem_post"); |
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70 free(strings); free(cmdbuf); free(resbuf); |
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71 } |
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72 void DebugC::debug_init(char *prgname) { |
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73 struct timeval t; |
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74 DebugC::prg_name = prgname; |
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75 gettimeofday(&t, NULL); |
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76 DebugC::t0 = 1000000*t.tv_sec+t.tv_usec; |
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77 if((DebugC::semP = (sem_t*)mmap(NULL, sizeof(sem_t), PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0)) < 0) ERR("mmap"); |
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78 if(sem_init(DebugC::semP, 1, 1) < 0) ERR("LOG sem_init"); |
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79 } |
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80 |