auto import from //depot/cupcake/@135843
diff --git a/emulator/qtools/read_pid.cpp b/emulator/qtools/read_pid.cpp
new file mode 100644
index 0000000..a2d69d4
--- /dev/null
+++ b/emulator/qtools/read_pid.cpp
@@ -0,0 +1,71 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include "trace_reader.h"
+
+int main(int argc, char **argv) {
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s trace_file\n", argv[0]);
+ exit(1);
+ }
+
+ char *trace_filename = argv[1];
+ TraceReaderBase *trace = new TraceReaderBase;
+ trace->Open(trace_filename);
+
+ while (1) {
+ PidEvent event;
+ if (trace->ReadPidEvent(&event))
+ break;
+ switch (event.rec_type) {
+ case kPidFork:
+ printf("t%lld fork tgid %d pid %d\n", event.time, event.tgid, event.pid);
+ break;
+ case kPidClone:
+ printf("t%lld clone tgid %d pid %d\n", event.time, event.tgid, event.pid);
+ break;
+ case kPidSwitch:
+ printf("t%lld switch %d\n", event.time, event.pid);
+ break;
+ case kPidExit:
+ printf("t%lld exit %d\n", event.time, event.pid);
+ break;
+ case kPidMmap:
+ printf("t%lld mmap %08x - %08x, offset %08x '%s'\n",
+ event.time, event.vstart, event.vend, event.offset, event.path);
+ delete[] event.path;
+ break;
+ case kPidMunmap:
+ printf("t%lld munmap %08x - %08x\n",
+ event.time, event.vstart, event.vend);
+ break;
+ case kPidSymbolAdd:
+ printf("t%lld add sym %08x '%s'\n",
+ event.time, event.vstart, event.path);
+ delete[] event.path;
+ break;
+ case kPidSymbolRemove:
+ printf("t%lld remove %08x\n", event.time, event.vstart);
+ break;
+ case kPidExec:
+ printf("t%lld argc: %d\n", event.time, event.argc);
+ for (int ii = 0; ii < event.argc; ++ii) {
+ printf(" argv[%d]: %s\n", ii, event.argv[ii]);
+ delete[] event.argv[ii];
+ }
+ delete[] event.argv;
+ break;
+ case kPidKthreadName:
+ printf("t%lld kthread tgid %d pid %d %s\n",
+ event.time, event.tgid, event.pid, event.path);
+ delete[] event.path;
+ break;
+ case kPidName:
+ printf("t%lld name %d %s\n",
+ event.time, event.pid, event.path);
+ delete[] event.path;
+ break;
+ }
+ }
+ return 0;
+}