Fix a memory deallocation error that was crashing q2dm.

Also fix a bunch of compile warnings by changing "char *" to "const char *".

emulator/qtools/coverage.cpp

@@ -137,7 +137,7 @@ int main(int argc, char **argv)
             continue;
         if (strcmp(psym->name, ".plt") == 0)
             continue;
-        char *ksym = " ";
+        const char *ksym = " ";
         if (psym->region->flags & region_type::kIsKernelRegion)
             ksym = "k";
         printf("%s %s %s\n", ksym, psym->name, psym->region->path);

emulator/qtools/post_trace.cpp

@@ -137,7 +137,7 @@ int main(int argc, char **argv) {
   double insn_per_sec = 0;
   if (elapsed_secs != 0)
     insn_per_sec = num_dynamic_insn / elapsed_secs;
-  char *suffix = "";
+  const char *suffix = "";
   if (insn_per_sec >= 1000000) {
     insn_per_sec /= 1000000.0;
     suffix = "M";

emulator/qtools/profile_pid.cpp

@@ -76,7 +76,7 @@ int main(int argc, char **argv) {
     sum_time += pstate->cpu_time;
     double per = 100.0 * pstate->cpu_time / total_time;
     double sum_per = 100.0 * sum_time / total_time;
-    char *print_flags = "";
+    const char *print_flags = "";
     if ((pstate->flags & ProcessState::kCalledExec) == 0)
       print_flags = "T";
     if (pstate->name == NULL)

emulator/qtools/profile_trace.cpp

@@ -118,7 +118,7 @@ int main(int argc, char **argv)
         double per = 100.0 * sym->elapsed / total;
         double sum_per = 100.0 * sum / total;
         double secs = 1.0 * sym->elapsed / kMHz;
-        char *ksym = " ";
+        const char *ksym = " ";
         if (sym->region->flags & region_type::kIsKernelRegion)
             ksym = "k";
         printf("%12.2f %11lld %6.2f %6.2f  %s %s\n",

emulator/qtools/q2dm.cpp

@@ -208,7 +208,7 @@ int main(int argc, char **argv)
         if (pStack == NULL) {
             pStack = new CallStackType(event.pid, kNumStackFrames, trace);
             stacks[event.pid] = pStack;
-            char *name = trace->GetProcessName(event.pid);
+            const char *name = trace->GetProcessName(event.pid);
             dmtrace->addThread(event.pid, name);
         }
 
@@ -267,7 +267,6 @@ int main(int argc, char **argv)
         }
     }
 
-
     dmtrace->close();
     delete dmtrace;
     delete trace;

emulator/qtools/read_addr.cpp

@@ -20,7 +20,7 @@ int main(int argc, char **argv) {
 
     if (trace->ReadAddr(&time, &addr, &flags))
       break;
-    char *op = "ld";
+    const char *op = "ld";
     if (flags == 1)
         op = "st";
     printf("%lld 0x%08x %s\n", time, addr, op);

emulator/qtools/trace_reader.cpp

@@ -131,7 +131,7 @@ BBReader::~BBReader()
     delete decoder_;
 }
 
-void BBReader::Open(char *filename)
+void BBReader::Open(const char *filename)
 {
     // Initialize the class variables
     memset(&nextrec_, 0, sizeof(TimeRec));
@@ -268,7 +268,7 @@ InsnReader::~InsnReader()
     delete decoder_;
 }
 
-void InsnReader::Open(char *filename)
+void InsnReader::Open(const char *filename)
 {
     prev_time_ = 0;
     time_diff_ = 0;
@@ -310,7 +310,7 @@ AddrReader::~AddrReader()
 }
 
 // Returns true if there is an error opening the file
-bool AddrReader::Open(char *filename, char *suffix)
+bool AddrReader::Open(const char *filename, const char *suffix)
 {
     struct stat stat_buf;
 
@@ -367,7 +367,7 @@ ExcReader::~ExcReader()
     delete decoder_;
 }
 
-void ExcReader::Open(char *filename)
+void ExcReader::Open(const char *filename)
 {
     prev_time_ = 0;
     prev_recnum_ = 0;
@@ -421,7 +421,7 @@ PidReader::~PidReader()
     delete decoder_;
 }
 
-void PidReader::Open(char *filename)
+void PidReader::Open(const char *filename)
 {
     prev_time_ = 0;
 
@@ -561,7 +561,7 @@ MethodReader::~MethodReader()
     delete decoder_;
 }
 
-bool MethodReader::Open(char *filename)
+bool MethodReader::Open(const char *filename)
 {
     struct stat stat_buf;
 
@@ -686,8 +686,8 @@ TraceReaderBase::~TraceReaderBase()
     delete[] static_filename_;
 }
 
-void TraceReaderBase::ReadTraceHeader(FILE *fstream, char *filename,
+void TraceReaderBase::ReadTraceHeader(FILE *fstream, const char *filename,
-                                      char *tracename, TraceHeader *header)
+                                      const char *tracename, TraceHeader *header)
 {
     int rval = fread(header, sizeof(TraceHeader), 1, fstream);
     if (rval != 1) {
@@ -721,7 +721,7 @@ void TraceReaderBase::ReadTraceHeader(FILE *fstream, char *filename,
 }
 
 
-void TraceReaderBase::Open(char *filename)
+void TraceReaderBase::Open(const char *filename)
 {
     char *fname;
     FILE *fstream;
@@ -840,7 +840,7 @@ static void CopyDexSymbolsToArray(DexFileList *dexfile,
     }
 }
 
-void TraceReaderBase::ParseDexList(char *filename)
+void TraceReaderBase::ParseDexList(const char *filename)
 {
     struct stat stat_buf;
     static const int kBufSize = 4096;

emulator/qtools/trace_reader.h

@@ -165,7 +165,7 @@ class TraceReader : public TraceReaderBase {
         uint32_t        flags;
         int             argc;
         char            **argv;
-        char            *name;
+        const char      *name;
         int             nregions;        // num regions in use
         int             max_regions;     // max regions allocated
         region_type     **regions;
@@ -189,7 +189,7 @@ class TraceReader : public TraceReaderBase {
     ProcessState        *GetCurrentProcess()            { return current_; }
     ProcessState        *GetProcesses(int *num_procs);
     ProcessState        *GetNextProcess();
-    char                *GetProcessName(int pid);
+    const char          *GetProcessName(int pid);
     void                SetRoot(const char *root)       { root_ = root; }
     void                SetDemangle(bool demangle)      { demangle_ = demangle; }
     bool                ReadMethodSymbol(MethodRec *method_record,
@@ -276,11 +276,14 @@ TraceReader<T>::~TraceReader()
     hash_entry_type *ptr;
     for (ptr = hash_->GetFirst(); ptr; ptr = hash_->GetNext()) {
         region_type *region = ptr->value;
-        int nsymbols = region->nsymbols;
+        // If the symbols are not shared with another region, then delete them.
-        for (int ii = 0; ii < nsymbols; ii++) {
+        if ((region->flags & region_type::kSharedSymbols) == 0) {
-            delete[] region->symbols[ii].name;
+            int nsymbols = region->nsymbols;
+            for (int ii = 0; ii < nsymbols; ii++) {
+                delete[] region->symbols[ii].name;
+            }
+            delete[] region->symbols;
         }
-        delete[] region->symbols;
         delete[] region->path;
 
         // Do not delete the region itself here.  Each region
@@ -422,7 +425,7 @@ TraceReader<T>::GetNextProcess()
 }
 
 template<class T>
-char* TraceReader<T>::GetProcessName(int pid)
+const char* TraceReader<T>::GetProcessName(int pid)
 {
     if (pid < 0 || pid >= kNumPids || processes_[pid] == NULL)
         return "(unknown)";
@@ -1165,8 +1168,6 @@ void TraceReader<T>::HandlePidEvent(PidEvent *event)
                 } else {
                     region->nsymbols = existing_region->nsymbols;
                     region->symbols = existing_region->symbols;
-                    region->path = existing_region->path;
-                    delete[] event->path;
                     region->flags |= region_type::kSharedSymbols;
                 }
 

emulator/qtools/trace_reader_base.h

@@ -83,7 +83,7 @@ class TraceReaderBase {
 
     friend class BBReader;
 
-    void                Open(char *filename);
+    void                Open(const char *filename);
     void                Close();
     void                WriteHeader(TraceHeader *header);
     inline bool         ReadBB(BBEvent *event);
@@ -120,10 +120,10 @@ class TraceReaderBase {
 
   private:
     int          FindNumInsns(uint64_t bb_num, uint64_t bb_start_time);
-    void         ReadTraceHeader(FILE *fstream, char *filename,
+    void         ReadTraceHeader(FILE *fstream, const char *filename,
-                                char *tracename, TraceHeader *header);
+                                const char *tracename, TraceHeader *header);
     PidEvent     *FindMmapDexFileEvent();
-    void         ParseDexList(char *filename);
+    void         ParseDexList(const char *filename);
 
     char         *static_filename_;
     FILE         *static_fstream_;
@@ -159,7 +159,7 @@ class BBReader {
   public:
     explicit BBReader(TraceReaderBase *trace);
     ~BBReader();
-    void     Open(char *filename);
+    void     Open(const char *filename);
     void     Close();
     bool     ReadBB(BBEvent *event);
 
@@ -193,7 +193,7 @@ class InsnReader {
     InsnReader();
     ~InsnReader();
 
-    void        Open(char *filename);
+    void        Open(const char *filename);
     void        Close();
     uint64_t    ReadInsnTime(uint64_t min_time);
 
@@ -209,7 +209,7 @@ class AddrReader {
     AddrReader();
     ~AddrReader();
 
-    bool        Open(char *filename, char *suffix);
+    bool        Open(const char *filename, const char *suffix);
     void        Close();
     bool        ReadAddr(uint64_t *time, uint32_t *addr);
 
@@ -225,7 +225,7 @@ class ExcReader {
     ExcReader();
     ~ExcReader();
 
-    void        Open(char *filename);
+    void        Open(const char *filename);
     void        Close();
     bool        ReadExc(uint64_t *time, uint32_t *current_pc,
                         uint64_t *recnum, uint32_t *target_pc,
@@ -243,7 +243,7 @@ class PidReader {
     PidReader();
     ~PidReader();
 
-    void        Open(char *filename);
+    void        Open(const char *filename);
     void        Close();
     bool        ReadPidEvent(struct PidEvent *event);
     void        Dispose(struct PidEvent *event);
@@ -258,7 +258,7 @@ class MethodReader {
     MethodReader();
     ~MethodReader();
 
-    bool        Open(char *filename);
+    bool        Open(const char *filename);
     void        Close();
     bool        ReadMethod(MethodRec *method_record);