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-rw-r--r--src/base/trace.cc288
1 files changed, 77 insertions, 211 deletions
diff --git a/src/base/trace.cc b/src/base/trace.cc
index 6e9838456..7afb038be 100644
--- a/src/base/trace.cc
+++ b/src/base/trace.cc
@@ -37,8 +37,9 @@
#include <vector>
#include "base/misc.hh"
-#include "base/trace.hh"
+#include "base/output.hh"
#include "base/str.hh"
+#include "base/trace.hh"
#include "base/varargs.hh"
using namespace std;
@@ -46,6 +47,7 @@ using namespace std;
namespace Trace {
const string DefaultName("global");
FlagVec flags(NumFlags, false);
+bool enabled = true;
//
// This variable holds the output stream for debug information. Other
@@ -54,149 +56,74 @@ FlagVec flags(NumFlags, false);
// output.
//
ostream *dprintf_stream = &cerr;
-
-ObjectMatch ignore;
-
-Log theLog;
-
-Log::Log()
+ostream &
+output()
{
- size = 0;
- buffer = NULL;
+ return *dprintf_stream;
}
-
void
-Log::init(int _size)
+setOutput(const string &filename)
{
- if (buffer != NULL) {
- fatal("Trace::Log::init called twice!");
- }
-
- size = _size;
-
- buffer = new Record *[size];
-
- for (int i = 0; i < size; ++i) {
- buffer[i] = NULL;
- }
-
- nextRecPtr = &buffer[0];
- wrapRecPtr = &buffer[size];
+ dprintf_stream = simout.find(filename);
}
+ObjectMatch ignore;
-Log::~Log()
+void
+dprintf(Tick when, const std::string &name, const char *format,
+ CPRINTF_DEFINITION)
{
- for (int i = 0; i < size; ++i) {
- delete buffer[i];
- }
-
- delete [] buffer;
-}
+ if (!name.empty() && ignore.match(name))
+ return;
+ std::ostream &os = *dprintf_stream;
-void
-Log::append(Record *rec)
-{
- // dump record to output stream if there's one open
- if (dprintf_stream != NULL) {
- rec->dump(*dprintf_stream);
- } else {
- rec->dump(cout);
- }
+ string fmt = "";
+ CPrintfArgsList args(VARARGS_ALLARGS);
- // no buffering: justget rid of it now
- if (buffer == NULL) {
- delete rec;
- return;
+ if (!name.empty()) {
+ fmt = "%s: " + fmt;
+ args.push_front(name);
}
- Record *oldRec = *nextRecPtr;
-
- if (oldRec != NULL) {
- // log has wrapped: overwrite
- delete oldRec;
+ if (when != (Tick)-1) {
+ fmt = "%7d: " + fmt;
+ args.push_front(when);
}
- *nextRecPtr = rec;
+ fmt += format;
- if (++nextRecPtr == wrapRecPtr) {
- nextRecPtr = &buffer[0];
- }
+ ccprintf(os, fmt.c_str(), args);
+ os.flush();
}
-
void
-Log::dump(ostream &os)
+dump(Tick when, const std::string &name, const void *d, int len)
{
- if (buffer == NULL) {
+ if (!name.empty() && ignore.match(name))
return;
- }
- Record **bufPtr = nextRecPtr;
-
- if (*bufPtr == NULL) {
- // next record slot is empty: log must not be full yet.
- // start dumping from beginning of buffer
- bufPtr = buffer;
- }
+ std::ostream &os = *dprintf_stream;
- do {
- Record *rec = *bufPtr;
-
- rec->dump(os);
-
- if (++bufPtr == wrapRecPtr) {
- bufPtr = &buffer[0];
- }
- } while (bufPtr != nextRecPtr);
-}
-
-PrintfRecord::~PrintfRecord()
-{}
-
-void
-PrintfRecord::dump(ostream &os)
-{
string fmt = "";
+ CPrintfArgsList args;
if (!name.empty()) {
fmt = "%s: " + fmt;
args.push_front(name);
}
- if (cycle != (Tick)-1) {
+ if (when != (Tick)-1) {
fmt = "%7d: " + fmt;
- args.push_front(cycle);
+ args.push_front(when);
}
- fmt += format;
-
- ccprintf(os, fmt.c_str(), args);
- os.flush();
-}
-
-DataRecord::DataRecord(Tick _cycle, const string &_name,
- const void *_data, int _len)
- : Record(_cycle), name(_name), len(_len)
-{
- data = new uint8_t[len];
- memcpy(data, _data, len);
-}
-
-DataRecord::~DataRecord()
-{
- delete [] data;
-}
-
-void
-DataRecord::dump(ostream &os)
-{
+ const char *data = static_cast<const char *>(d);
int c, i, j;
-
for (i = 0; i < len; i += 16) {
- ccprintf(os, "%d: %s: %08x ", cycle, name, i);
+ ccprintf(os, fmt, args);
+ ccprintf(os, "%08x ", i);
c = len - i;
if (c > 16) c = 16;
@@ -212,8 +139,7 @@ DataRecord::dump(ostream &os)
for (j = 0; j < c; j++) {
int ch = data[i + j] & 0x7f;
- ccprintf(os,
- "%c", (char)(isprint(ch) ? ch : ' '));
+ ccprintf(os, "%c", (char)(isprint(ch) ? ch : ' '));
}
ccprintf(os, "\n");
@@ -222,126 +148,66 @@ DataRecord::dump(ostream &os)
break;
}
}
-} // namespace Trace
-//
-// Returns the current output stream for debug information. As a
-// wrapper around Trace::dprintf_stream, this handles cases where debug
-// information is generated in the process of parsing .ini options,
-// before we process the option that sets up the debug output stream
-// itself.
-//
-std::ostream &
-DebugOut()
-{
- return *Trace::dprintf_stream;
-}
-
-/////////////////////////////////////////////
-//
-// C-linkage functions for invoking from gdb
-//
-/////////////////////////////////////////////
-
-//
-// Dump trace buffer to specified file (cout if NULL)
-//
-void
-dumpTrace(const char *filename)
-{
- if (filename != NULL) {
- ofstream out(filename);
- Trace::theLog.dump(out);
- out.close();
- }
- else {
- Trace::theLog.dump(cout);
- }
-}
-
-
-//
-// Turn on/off trace output to cerr. Typically used when trace output
-// is only going to circular buffer, but you want to see what's being
-// sent there as you step through some code in gdb. This uses the
-// same facility as the "trace to file" feature, and will print error
-// messages rather than clobbering an existing ostream pointer.
-//
-void
-echoTrace(bool on)
-{
- if (on) {
- if (Trace::dprintf_stream != NULL) {
- cerr << "Already echoing trace to a file... go do a 'tail -f'"
- << " on that file instead." << endl;
- } else {
- Trace::dprintf_stream = &cerr;
- }
- } else {
- if (Trace::dprintf_stream != &cerr) {
- cerr << "Not echoing trace to cerr." << endl;
- } else {
- Trace::dprintf_stream = NULL;
- }
- }
-}
-
-void
-printTraceFlags()
-{
- using namespace Trace;
- for (int i = 0; i < numFlagStrings; ++i)
- if (flags[i])
- cprintf("%s\n", flagStrings[i]);
-}
-
-void
-tweakTraceFlag(const char *string, bool value)
+bool
+changeFlag(const char *s, bool value)
{
using namespace Trace;
- std::string str(string);
+ std::string str(s);
for (int i = 0; i < numFlagStrings; ++i) {
if (str != flagStrings[i])
continue;
- int idx = i;
-
- if (idx < NumFlags) {
- flags[idx] = value;
+ if (i < NumFlags) {
+ flags[i] = value;
} else {
- idx -= NumFlags;
- if (idx >= NumCompoundFlags) {
- ccprintf(cerr, "Invalid compound flag");
- return;
- }
-
- const Flags *flagVec = compoundFlags[idx];
+ i -= NumFlags;
+ const Flags *flagVec = compoundFlags[i];
for (int j = 0; flagVec[j] != -1; ++j) {
- if (flagVec[j] >= NumFlags) {
- ccprintf(cerr, "Invalid compound flag");
- return;
- }
- flags[flagVec[j]] = value;
+ if (flagVec[j] < NumFlags)
+ flags[flagVec[j]] = value;
}
}
- cprintf("flag %s was %s\n", string, value ? "set" : "cleared");
- return;
+ return true;
}
- cprintf("could not find flag %s\n", string);
+ // the flag was not found.
+ return false;
}
void
-setTraceFlag(const char *string)
+dumpStatus()
{
- tweakTraceFlag(string, true);
+ using namespace Trace;
+ for (int i = 0; i < numFlagStrings; ++i) {
+ if (flags[i])
+ cprintf("%s\n", flagStrings[i]);
+ }
}
-void
-clearTraceFlag(const char *string)
-{
- tweakTraceFlag(string, false);
-}
+/* namespace Trace */ }
+
+
+// add a set of functions that can easily be invoked from gdb
+extern "C" {
+ void
+ setTraceFlag(const char *string)
+ {
+ Trace::changeFlag(string, true);
+ }
+
+ void
+ clearTraceFlag(const char *string)
+ {
+ Trace::changeFlag(string, false);
+ }
+
+ void
+ dumpTraceStatus()
+ {
+ Trace::dumpStatus();
+ }
+/* extern "C" */ }
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