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Code Issues Releases Activity

dur trace a little better

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This commit is contained in:
dwight 2010-12-12 16:05:21 -05:00
parent 6dea71aa52
commit cc66c8abf0
3 changed files with 31 additions and 6 deletions
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5
db/dur.cpp
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@ -60,8 +60,13 @@ namespace mongo {
namespace {
using namespace dur;
#if defined(_DEBUG)
const bool DebugValidateMapsMatch = true;
const bool DebugCheckLastDeclaredWrite = true;
#else
const bool DebugValidateMapsMatch = false;
const bool DebugCheckLastDeclaredWrite = false;
#endif
CommitJob commitJob;
}

16
db/dur.h
View File

@ -7,12 +7,14 @@
namespace mongo {
class DurableInterface {
class DurableInterface : boost::noncopyable {
protected:
DurableInterface() {} // Should only be creating subclasses
DurableInterface() {} // Should only be creating by subclasses
public:
/** call during startup so durability module can initialize
virtual ~DurableInterface() { assert(!"don't destroy me"); }
/** call during startup so durability module can initialize
throws if fatal error
*/
virtual void startup() = 0;
@ -50,9 +52,9 @@ namespace mongo {
*/
virtual void* writingAtOffset(void *buf, unsigned ofs, unsigned len) = 0;
#if defined(_DEBUG)
virtual void debugCheckLastDeclaredWrite() = 0;
virtual ~DurableInterface() { assert(!"don't destroy me"); }
#endif
//////////////////////////////
// END OF VIRTUAL FUNCTIONS //
@ -124,7 +126,9 @@ namespace mongo {
void* writingAtOffset(void *buf, unsigned ofs, unsigned len) { return buf; }
void declareWriteIntent(void *, unsigned) { }
void createdFile(string filename, unsigned long long len) { }
#if defined(_DEBUG)
void debugCheckLastDeclaredWrite() {}
#endif
};
#ifdef _DURABLE
@ -134,7 +138,9 @@ namespace mongo {
void* writingAtOffset(void *buf, unsigned ofs, unsigned len);
void declareWriteIntent(void *, unsigned);
void createdFile(string filename, unsigned long long len);
#if defined(_DEBUG)
void debugCheckLastDeclaredWrite();
#endif
};
#endif

16
db/dur_commitjob.h
View File

@ -93,6 +93,9 @@ namespace mongo {
/** record/note an intent to write */
void note(WriteIntent& w) {
// TEMP
DEV getDur().debugCheckLastDeclaredWrite();
// from the point of view of the dur module, it would be fine (i think) to only
// be read locked here. but must be at least read locked to avoid race with
// remapprivateview
@ -110,7 +113,18 @@ namespace mongo {
turn this on and see what is logged. if you have a copy of its output from before the
regression, a simple diff of these lines would tell you a lot likely.
*/
log() << "DEBUG note write intent " << w.p << ' ' << w.len << endl;
#if 1 && defined(_DEBUG)
{
size_t ofs;
MongoMMF *mmf = privateViews._find(w.p, ofs);
if( mmf ) {
log() << "DEBUG note write intent " << w.p << ' ' << mmf->filename() << " ofs:" << hex << ofs << " len:" << w.len << endl;
}
else {
log() << "DEBUG note write intent " << w.p << ' ' << w.len << " NOT FOUND IN privateViews" << endl;
}
}
#endif
// remember intent. we will journal it in a bit
_wi._writes.push_back(w);