*/
#define DEBUG_HPC 0
+#define WOP_SIZE 1024
static int hpc_inited = 0; // Have you started this component?
+static int totalTickCount = 0; // How many ticks have we got to work with
static FILE *tixFile; // file being read/written
static int tix_ch; // current char
static StgWord64 magicTixNumber; // Magic/Hash number to mark .tix files
-static FILE *rixFile = NULL; // The tracer file/pipe
+static FILE *rixFile = NULL; // The tracer file/pipe (to debugger)
+static FILE *rixCmdFile = NULL; // The tracer file/pipe (from debugger)
+static StgWord64 rixCounter = 0; // The global event counter
+
+
+typedef enum {
+ RixThreadFinishedOp = -1,
+ RixRaiseOp = -2,
+ RixFinishedOp = -3
+} HpcRixOp;
+
typedef struct _Info {
char *modName; // name of module
StgWord64 *tixBoxes = 0; // local copy of tixBoxes array, from file.
int totalTixes = 0; // total number of tix boxes.
-
-
static char *tixFilename;
+
static void failure(char *msg) {
- printf("Hpc failure: %s\n",msg);
- printf("(perhaps remove .tix file?)\n");
+ fprintf(stderr,"Hpc failure: %s\n",msg);
+ fprintf(stderr,"(perhaps remove .tix file?)\n");
exit(-1);
}
static void expect(char c) {
if (tix_ch != c) {
- printf("Hpc: parse failed (%c,%c)\n",tix_ch,c);
+ fprintf(stderr,"Hpc: parse failed (%c,%c)\n",tix_ch,c);
exit(-1);
}
tix_ch = getc(tixFile);
int offset = 0;
#if DEBUG_HPC
- printf("hs_hpc_module(%s,%d)\n",modName,modCount);
+ fprintf(stderr,"hs_hpc_module(%s,%d)\n",modName,modCount);
#endif
hpc_init();
}
#if DEBUG_HPC
- printf("end: hs_hpc_module\n");
+ fprintf(stderr,"end: hs_hpc_module\n");
#endif
return offset;
}
-static StgThreadID previous_tid = 0;
+static void breakPointCommand(HpcRixOp rixOp, StgThreadID rixTid);
-static void
-send_ThreadId(StgTSO *current_tso) {
- // This assumes that there is no real thread 0.
- StgThreadID tid = (current_tso == 0) ? 0 : current_tso->id;
- if (tid != previous_tid) {
- previous_tid = tid;
- // How do we print StgWord32's without a cast?
- fprintf(rixFile,"Thread Switch %d\n",(unsigned int)tid);
- }
+// Breakpointing
+static StgThreadID previousTid = 0;
+static StgWord64 rixBPCounter = 0; // The global event breakpoint counter
+static int tixBoxBP[10000];
+static int specialOpBP = 0;
+static HpcRixOp rixOpBack[WOP_SIZE]; // The actual op
+static HpcRixOp rixTidBack[WOP_SIZE]; // Tid's before the op
+
+void
+hs_hpc_raise_event(StgTSO *current_tso) {
+ hs_hpc_tick(RixRaiseOp,current_tso);
}
-/*
- * Called on *every* exception thrown
+void
+hs_hpc_thread_finished_event(StgTSO *current_tso) {
+ hs_hpc_tick(RixThreadFinishedOp,current_tso);
+}
+
+/* Called on every tick, dynamically, sending to our
+ * external record of program execution.
*/
-void
-hs_hpc_event(char *msg,StgTSO *current_tso) {
- // Assumes that we have had at least *one* tick first.
- // All exceptions before the first tick are not reported.
- // The only time this might be an issue is in bootstrapping code,
- // so this is a feature.
- // This is called on *every* exception, even when Hpc is not enabled.
+void
+hs_hpc_tick(int rixOp, StgTSO *current_tso) {
+#if DEBUG_HPC
+ fprintf(stderr,"hs_hpc_tick(%x)\n",rixOp);
+#endif
+ if (rixFile == NULL) {
+ return;
+ }
+ assert(rixCmdFile != NULL);
+ StgThreadID tid = (current_tso == 0) ? 0 : current_tso->id;
- if (rixFile != NULL) {
- assert(hpc_inited != 0);
- send_ThreadId(current_tso);
- fprintf(rixFile,"%s\n",msg);
+ // now check to see if we have met a breakpoint condition
+ if (rixCounter == rixBPCounter || (specialOpBP && tid != previousTid)) {
+ breakPointCommand(rixOp,tid);
+ } else {
+ if (rixOp >= 0) {
+ // Tix op
+ if (tixBoxBP[rixOp] == 1) { // reached a bp tixbox
+ breakPointCommand(rixOp,tid);
+ }
+ } else {
+ // Special op
+ if (specialOpBP) {
+ breakPointCommand(rixOp,tid);
+ }
+ }
}
-}
+ // update the history information.
+ previousTid = tid;
+ rixOpBack[rixCounter % WOP_SIZE] = rixOp;
+ rixTidBack[rixCounter % WOP_SIZE] = tid;
+ rixCounter++;
-/* Called on every tick, dynamically to our file record of program execution
- */
+#if DEBUG_HPC
+ fprintf(stderr,"end: hs_hpc_tick\n");
+#endif
+}
-void
-hs_hpc_tick(int globIx, StgTSO *current_tso) {
-#if DEBUG_HPC && DEBUG
- printf("hs_hpc_tick(%d)\n",globIx);
+static void
+printEvent(FILE *out,StgWord64 rixCounter,StgThreadID rixTid,HpcRixOp rixOp) {
+#if DEBUG_HPC
+ if (out != stderr) {
+ printEvent(stderr,rixCounter,rixTid,rixOp);
+ }
#endif
- assert(hpc_inited != 0);
- if (rixFile != NULL) {
- send_ThreadId(current_tso);
- fprintf(rixFile,"%d\n",globIx);
+ fprintf(out,"%" PRIuWORD64 " %u ",rixCounter,(unsigned int)rixTid);
+ switch(rixOp) {
+ case RixThreadFinishedOp:
+ fprintf(out,"ThreadFinished\n");
+ case RixRaiseOp:
+ fprintf(out,"Raise\n");
+ case RixFinishedOp:
+ fprintf(out,"Finished\n");
+ default:
+ fprintf(out,"%u\n",rixOp);
}
+}
+static void
+breakPointCommand(HpcRixOp rixOp, StgThreadID rixTid) {
+ StgWord64 tmp64 = 0;
+ unsigned int tmp = 0;
+ printEvent(rixFile,rixCounter,rixTid,rixOp);
+ fflush(rixFile);
+ /* From here, you can ask some basic questions.
+ *
+ * c<nat> set the (one) counter breakpoint
+ * s<nat> set the (many) tickbox breakpoint
+ * u<nat> unset the (many) tickbox breakpoint
+ * x set special bp
+ * o unset special bp
+ * h history
+
+ * Note that you aways end up here on the first tick
+ * because the specialOpBP is equal 0.
+ */
+ int c = getc(rixCmdFile);
+ while(c != 10 && c != -1) {
+ switch(c) {
+ case 'c': // c1234 -- set counter breakpoint at 1234
+ c = getc(rixCmdFile);
+ tmp64 = 0;
+ while(isdigit(c)) {
+ tmp64 = tmp64 * 10 + (c - '0');
+ c = getc(rixCmdFile);
+ }
#if DEBUG_HPC
- printf("end: hs_hpc_tick\n");
+ fprintf(stderr,"setting countBP = %" PRIuWORD64 "\n",tmp64);
+#endif
+ rixBPCounter = tmp64;
+ break;
+ case 's': // s2323 -- set tick box breakpoint at 2323
+ c = getc(rixCmdFile);
+ tmp = 0;
+ while(isdigit(c)) {
+ tmp = tmp * 10 + (c - '0');
+ c = getc(rixCmdFile);
+ }
+#if DEBUG_HPC
+ fprintf(stderr,"seting bp for tix %d\n",tmp);
+#endif
+ tixBoxBP[tmp] = 1;
+ break;
+ case 'u': // u2323 -- unset tick box breakpoint at 2323
+ c = getc(rixCmdFile);
+ tmp = 0;
+ while(isdigit(c)) {
+ tmp = tmp * 10 + (c - '0');
+ c = getc(rixCmdFile);
+ }
+#if DEBUG_HPC
+ fprintf(stderr,"unseting bp for tix %d\n",tmp);
+#endif
+ tixBoxBP[tmp] = 0;
+ break;
+ case 'x': // x -- set special bp flag
+#if DEBUG_HPC
+ fprintf(stderr,"seting specialOpBP = 1\n");
+#endif
+ specialOpBP = 1;
+ c = getc(rixCmdFile);
+ break;
+ case 'o': // o -- clear special bp flag
+#if DEBUG_HPC
+ fprintf(stderr,"seting specialOpBP = 0\n");
+#endif
+ specialOpBP = 0;
+ c = getc(rixCmdFile);
+ break;
+ case 'h': // h -- history of the last few (WOP_SIZE) steps
+ if (rixCounter > WOP_SIZE) {
+ tmp64 = rixCounter - WOP_SIZE;
+ } else {
+ tmp64 = 0;
+ }
+ for(;tmp64 < rixCounter;tmp64++) {
+ printEvent(rixFile,tmp64,rixTidBack[tmp64 % WOP_SIZE],rixOpBack[tmp64 % WOP_SIZE]);
+ }
+ fflush(rixFile);
+ c = getc(rixCmdFile);
+ break;
+ default:
+#if DEBUG_HPC
+ fprintf(stderr,"strange command from HPCRIX (%d)\n",c);
+#endif
+ c = getc(rixCmdFile);
+ }
+ while (c != 10) { // the end of the line
+ c = getc(rixCmdFile); // to the end of the line
+ }
+ c = getc(rixCmdFile); // the first char on the next command
+ }
+#if DEBUG_HPC
+ fprintf(stderr,"re entering program\n");
#endif
-
}
/* This is called after all the modules have registered their local tixboxes,
startupHpc(void) {
Info *tmpModule;
char *hpcRix;
+ char *hpcRixCmd;
#if DEBUG_HPC
- printf("startupHpc\n");
+ fprintf(stderr,"startupHpc\n");
#endif
if (hpc_inited == 0) {
if (tixBoxes) {
for(;tmpModule != 0;tmpModule = tmpModule->next) {
+ totalTickCount += tmpModule->tickCount;
if (!tmpModule->tixArr) {
fprintf(stderr,"error: module %s did not register any hpc tick data\n",
tmpModule->modName);
}
}
- // HPCRIX contains the name of the file to send our dynamic runtime output to.
- // This might be a real file, or perhaps a named pipe.
+ // HPCRIX contains the name of the file to send our dynamic runtime output to (a named pipe).
+
hpcRix = getenv("HPCRIX");
if (hpcRix) {
int comma;
assert(hpc_inited);
rixFile = fopen(hpcRix,"w");
-
comma = 0;
fprintf(rixFile,"Starting %s\n",prog_name);
}
fprintf(rixFile,"]\n");
fflush(rixFile);
+
+ // Now we open the command channel.
+ hpcRixCmd = getenv("HPCRIXCMD");
+ assert(hpcRixCmd != NULL);
+ rixCmdFile = fopen(hpcRixCmd,"r");
+ assert(rixCmdFile != NULL);
+
}
}
int i, comma;
#if DEBUG_HPC
- printf("exitHpc\n");
+ fprintf(stderr,"exitHpc\n");
#endif
if (hpc_inited == 0) {
fclose(f);
if (rixFile != NULL) {
- fprintf(rixFile,"Finished\n");
+ hs_hpc_tick(RixFinishedOp,(StgThreadID)0);
fclose(rixFile);
}
+ if (rixCmdFile != NULL) {
+ fclose(rixCmdFile);
+ }
}
projects / ghc-hetmet.git / commitdiff