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added progress check for filewriting, put important shared data behind mutex when being read from/written to

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This commit is contained in:
Paul Cruz 2017-07-18 15:23:11 -07:00
parent a34bc30237
commit ad66faf16a
1 changed files with 59 additions and 19 deletions
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78
contrib/adaptive-compression/adapt.c
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@ -88,7 +88,9 @@ typedef struct {
unsigned allJobsCompleted;
unsigned adaptParam;
unsigned compressionCompletionMeasured;
unsigned writeCompletionMeasured;
double compressionCompletion;
double writeCompletion;
mutex_t jobCompressed_mutex;
cond_t jobCompressed_cond;
mutex_t jobReady_mutex;
@ -97,6 +99,8 @@ typedef struct {
cond_t allJobsCompleted_cond;
mutex_t jobWrite_mutex;
cond_t jobWrite_cond;
mutex_t completion_mutex;
mutex_t stats_mutex;
size_t lastDictSize;
inBuff_t input;
cStat_t stats;
@ -156,6 +160,8 @@ static int freeCCtx(adaptCCtx* ctx)
error |= destroyCond(&ctx->allJobsCompleted_cond);
error |= destroyMutex(&ctx->jobWrite_mutex);
error |= destroyCond(&ctx->jobWrite_cond);
error |= destroyMutex(&ctx->completion_mutex);
error |= destroyMutex(&ctx->stats_mutex);
error |= ZSTD_isError(ZSTD_freeCCtx(ctx->cctx));
free(ctx->input.buffer.start);
if (ctx->jobs){
@ -200,6 +206,8 @@ static adaptCCtx* createCCtx(unsigned numJobs)
pthreadError |= initCond(&ctx->allJobsCompleted_cond);
pthreadError |= initMutex(&ctx->jobWrite_mutex);
pthreadError |= initCond(&ctx->jobWrite_cond);
pthreadError |= initMutex(&ctx->completion_mutex);
pthreadError |= initMutex(&ctx->stats_mutex);
if (pthreadError) return NULL;
}
ctx->numJobs = numJobs;
@ -315,24 +323,44 @@ static void adaptCompressionLevel(adaptCCtx* ctx)
}
else if ((writeSlow || createSlow) && ctx->compressionLevel < (unsigned)ZSTD_maxCLevel()) {
DEBUG(3, "increasing compression level %u\n", ctx->compressionLevel);
ctx->compressionLevel++;
reset = 1;
double completion;
pthread_mutex_lock(&ctx->completion_mutex.pMutex);
completion = ctx->writeCompletion;
pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
{
unsigned const maxChange = (unsigned)((1-completion) * (MAX_COMPRESSION_LEVEL_CHANGE - 1)) + 1;
unsigned const change = writeSlow ? MIN(maxChange, ZSTD_maxCLevel() - ctx->compressionLevel) : 1;
DEBUG(2, "writeSlow: %u, change: %u\n", writeSlow, change);
DEBUG(2, "write completion: %f\n", completion);
ctx->compressionLevel += change;
reset = 1;
}
}
else if (compressSlow && ctx->compressionLevel > 1) {
double const completion = ctx->compressionCompletion;
unsigned const maxChange = (unsigned)((1-completion) * (MAX_COMPRESSION_LEVEL_CHANGE-1)) + 1;
unsigned const change = MIN(maxChange, ctx->compressionLevel - 1);
DEBUG(3, "decreasing compression level %u\n", ctx->compressionLevel);
DEBUG(3, "completion: %f\n", completion);
ctx->compressionLevel -= change;
reset = 1;
double completion;
pthread_mutex_lock(&ctx->completion_mutex.pMutex);
completion = ctx->compressionCompletion;
pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
{
unsigned const maxChange = (unsigned)((1-completion) * (MAX_COMPRESSION_LEVEL_CHANGE-1)) + 1;
unsigned const change = MIN(maxChange, ctx->compressionLevel - 1);
DEBUG(3, "decreasing compression level %u\n", ctx->compressionLevel);
DEBUG(3, "completion: %f\n", completion);
ctx->compressionLevel -= change;
reset = 1;
}
}
if (reset) {
ctx->stats.readyCounter = 0;
ctx->stats.writeCounter = 0;
ctx->stats.compressedCounter = 0;
pthread_mutex_lock(&ctx->completion_mutex.pMutex);
ctx->compressionCompletion = 1;
ctx->compressionCompletionMeasured = 0;
ctx->writeCompletion = 1;
ctx->writeCompletionMeasured = 0;
pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
}
}
}
@ -455,12 +483,14 @@ static void* outputThread(void* arg)
ctx->stats.waitCompressed++;
ctx->stats.compressedCounter++;
reduceCounters(ctx);
pthread_mutex_lock(&ctx->completion_mutex.pMutex);
if (!ctx->compressionCompletionMeasured) {
ctx->compressionCompletion = ZSTD_getCompletion(ctx->cctx);
ctx->compressionCompletionMeasured = 1;
DEBUG(3, "output detected completion: %f\n", ctx->compressionCompletion);
}
pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
adaptCompressionLevel(ctx);
DEBUG(3, "output detected completion: %f\n", ctx->compressionCompletion);
DEBUG(3, "waiting on job compressed, nextJob: %u\n", currJob);
pthread_cond_wait(&ctx->jobCompressed_cond.pCond, &ctx->jobCompressed_mutex.pMutex);
}
@ -484,6 +514,14 @@ static void* outputThread(void* arg)
if (ret != writeSize) break;
pos += ret;
remaining -= ret;
/* update completion variable for writing */
pthread_mutex_lock(&ctx->completion_mutex.pMutex);
if (!ctx->writeCompletionMeasured) {
ctx->writeCompletion = 1 - (double)remaining/compressedSize;
}
pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
if (remaining == 0) break;
}
if (pos != compressedSize) {
@ -528,12 +566,10 @@ static int createCompressionJob(adaptCCtx* ctx, size_t srcSize, int last)
ctx->stats.waitWrite++;
ctx->stats.writeCounter++;
reduceCounters(ctx);
if (!ctx->compressionCompletion) {
ctx->compressionCompletion = ZSTD_getCompletion(ctx->cctx);
ctx->compressionCompletionMeasured = 1;
}
pthread_mutex_lock(&ctx->completion_mutex.pMutex);
ctx->writeCompletionMeasured = 1;
pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
adaptCompressionLevel(ctx);
DEBUG(3, "job creation detected completion %f\n", ctx->compressionCompletion);
DEBUG(3, "waiting on job Write, nextJob: %u\n", nextJob);
pthread_cond_wait(&ctx->jobWrite_cond.pCond, &ctx->jobWrite_mutex.pMutex);
}
@ -552,10 +588,7 @@ static int createCompressionJob(adaptCCtx* ctx, size_t srcSize, int last)
ctx->input.buffer.start = copy;
}
job->dictSize = ctx->lastDictSize;
pthread_mutex_lock(&ctx->jobReady_mutex.pMutex);
ctx->jobReadyID++;
pthread_cond_signal(&ctx->jobReady_cond.pCond);
pthread_mutex_unlock(&ctx->jobReady_mutex.pMutex);
DEBUG(3, "finished job creation %u\n", nextJob);
ctx->nextJobID++;
DEBUG(3, "filled: %zu, srcSize: %zu\n", ctx->input.filled, srcSize);
@ -567,6 +600,13 @@ static int createCompressionJob(adaptCCtx* ctx, size_t srcSize, int last)
ctx->lastDictSize = srcSize;
ctx->input.filled = srcSize;
}
/* signal job ready */
pthread_mutex_lock(&ctx->jobReady_mutex.pMutex);
ctx->jobReadyID++;
pthread_cond_signal(&ctx->jobReady_cond.pCond);
pthread_mutex_unlock(&ctx->jobReady_mutex.pMutex);
return 0;
}