+ debugTrace(DEBUG_hpc,"end: hs_hpc_module");
+
+ return offset;
+}
+
+static void breakPointCommand(HpcRixOp rixOp, StgThreadID rixTid);
+
+// Breakpointing
+static StgThreadID previousTid = 0;
+static StgWord64 rixBPCounter = 0; // The global event breakpoint counter
+static int *tixBoxBP;
+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);
+}
+
+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_tick(int rixOp, StgTSO *current_tso) {
+
+ debugTrace(DEBUG_hpc,"hs_hpc_tick(%x)",rixOp);
+
+ if (rixFile == NULL) {
+ return;
+ }
+ assert(rixCmdFile != NULL);
+ StgThreadID tid = (current_tso == 0) ? 0 : current_tso->id;
+
+ // now check to see if we have met a breakpoint condition
+ if (rixCounter == rixBPCounter
+ || tid != previousTid) {
+ breakPointCommand(rixOp,tid);
+ } else {
+ if (rixOp >= 0) {
+ // Tix op
+ if (tixBoxBP[rixOp] == 1) { // reached a bp tixbox
+ breakPointCommand(rixOp,tid);
+ }
+ } else {
+ // record the special operation
+ breakPointCommand(rixOp,tid);
+ }
+ }
+ // update the history information.
+ previousTid = tid;
+ rixOpBack[rixCounter % WOP_SIZE] = rixOp;
+ rixTidBack[rixCounter % WOP_SIZE] = tid;
+ rixCounter++;
+
+ debugTrace(DEBUG_hpc, "end: hs_hpc_tick");
+}
+
+static void
+printEvent(FILE *out,StgWord64 rixCounter,StgThreadID rixTid,HpcRixOp rixOp) {
+ char prefixMsg[128];
+ char suffixMsg[128];
+
+ sprintf(prefixMsg,
+ "Event %" PRIuWORD64 " %u ",
+ rixCounter,
+ (unsigned int)rixTid);
+
+ switch(rixOp) {
+ case RixThreadFinishedOp:
+ sprintf(suffixMsg,"ThreadFinished");
+ break;
+ case RixRaiseOp:
+ sprintf(suffixMsg,"Raise");
+ break;
+ case RixFinishedOp:
+ sprintf(suffixMsg,"Finished");
+ break;
+ default:
+ sprintf(suffixMsg,"%u",rixOp);
+ }
+
+ fprintf(out,"%s%s\n",prefixMsg,suffixMsg);
+ debugTrace(DEBUG_hpc,"sending %s%s",prefixMsg,suffixMsg);
+}
+
+static void
+breakPointCommand(HpcRixOp rixOp, StgThreadID rixTid) {
+ StgWord64 tmp64 = 0;
+ unsigned int tmp = 0;
+
+ if (getpid() != debuggee_pid) {
+ // We are not the original process, to do not issue
+ // any events, and do not try to talk to the debugger.
+ return;
+ }
+
+ debugTrace(DEBUG_hpc,"breakPointCommand %d %x",rixOp,(unsigned int)rixTid);
+
+ 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
+ * h history
+
+ * Note that you aways end up here on the first tick
+ * because the rixBPCounter starts equal to 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);
+ }
+ debugTrace(DEBUG_hpc,"setting countBP = %" PRIuWORD64,tmp64);
+
+ 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);
+ }
+
+ debugTrace(DEBUG_hpc,"seting bp for tix %d",tmp);
+
+ 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);
+ }
+
+ debugTrace(DEBUG_hpc,"unseting bp for tix %d",tmp);
+
+ tixBoxBP[tmp] = 0;
+ 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:
+
+ debugTrace(DEBUG_hpc,"strange command from HPCRIX (%d)",c);
+
+ 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
+ }
+
+ debugTrace(DEBUG_hpc,"leaving breakPointCommand");
+