Slightly reworked exception handling in the sorter.

src/jrd/sort.cpp

@@ -123,9 +123,6 @@ static sort_record*	get_merge(merge_control*, sort_context*);
 #endif
 
 static ULONG allocate_memory(sort_context*, ULONG, ULONG, bool);
-static void error_memory(sort_context*);
-static inline FB_UINT64 find_file_space(sort_context*, ULONG);
-static inline void free_file_space(sort_context*, FB_UINT64, ULONG);
 static void init(sort_context*);
 static bool local_fini(sort_context*, Attachment*);
 static void merge_runs(sort_context*, USHORT);
@@ -638,9 +635,12 @@ void SORT_get(thread_db* tdbb,
 
 	scb->scb_status_vector = tdbb->tdbb_status_vector;
 
+	try
+	{
 		// If there weren't any runs, everything fit in memory. Just return stuff.
 
 		if (!scb->scb_merge)
+		{
 			while (true)
 			{
 				if (scb->scb_records == 0)
@@ -652,17 +652,32 @@ void SORT_get(thread_db* tdbb,
 				if ( (record = *scb->scb_next_pointer++) )
 					break;
 			}
+		}
 		else
+		{
 			record = get_merge(scb->scb_merge, scb);
+		}
 
 		*record_address = (ULONG*) record;
 
-	if (record) {
+		if (record)
+		{
 			diddle_key((UCHAR*) record->sort_record_key, scb, false);
 		}
 
 		tdbb->bumpStats(RuntimeStatistics::SORT_GETS);
 	}
+	catch (const BadAlloc&)
+	{
+		Firebird::Arg::Gds(isc_sort_mem_err).raise();
+	}
+	catch (const status_exception& ex)
+	{
+		Firebird::Arg::Gds status(isc_sort_err);
+		status.append(Firebird::Arg::StatusVector(ex.value()));
+		status.raise();
+	}
+}
 #endif
 
 
@@ -701,8 +716,8 @@ sort_context* SORT_init(thread_db* tdbb,
 	ISC_STATUS* status_vector = tdbb->tdbb_status_vector;
 	sort_context* scb = NULL;
 
-	try {
+	try
-
+	{
 		// Allocate and setup a sort context block, including copying the
 		// key description vector. Round the record length up to the next
 		// longword, and add a longword to a pointer back to the pointer slot.
@@ -750,17 +765,19 @@ sort_context* SORT_init(thread_db* tdbb,
 			scb->scb_size_memory >= MIN_SORT_BUFFER_SIZE;
 			scb->scb_size_memory -= SORT_BUFFER_CHUNK_SIZE)
 		{
-			try {
+			try
+			{
 				scb->scb_memory = (SORTP*) scb->scb_pool->allocate(scb->scb_size_memory);
 				break;
 			}
-			catch (const Firebird::BadAlloc&) {
+			catch (const BadAlloc&)
-				// not enough memory, let's allocate smaller buffer
+			{} // not enough memory, let's allocate smaller buffer
-			}
 		}
 
 		if (scb->scb_size_memory < MIN_SORT_BUFFER_SIZE)
-			Firebird::BadAlloc::raise();
+		{
+			BadAlloc::raise();
+		}
 #endif // DEBUG_MERGE
 
 		scb->scb_end_memory = (SORTP*) ((BLOB_PTR*) scb->scb_memory + scb->scb_size_memory);
@@ -783,18 +800,21 @@ sort_context* SORT_init(thread_db* tdbb,
 			att->att_active_sorts = scb;
 			scb->scb_attachment = att;
 		}
+	}
+	catch (const BadAlloc&)
+	{
+		delete scb;
+		Firebird::Arg::Gds(isc_sort_mem_err).raise();
+	}
+	catch (const status_exception& ex)
+	{
+		delete scb;
+		Firebird::Arg::Gds status(isc_sort_err);
+		status.append(Firebird::Arg::StatusVector(ex.value()));
+		status.raise();
+	}
 
 	return scb;
-
-	}
-	catch (const Firebird::BadAlloc&)
-	{
-		Arg::Gds(isc_sort_mem_err).copyTo(status_vector);
-		delete scb;
-		ERR_punt();
-	}
-
-	return NULL;
 }
 
 
@@ -818,6 +838,8 @@ void SORT_put(thread_db* tdbb, sort_context* scb, ULONG** record_address)
  **************************************/
 	scb->scb_status_vector = tdbb->tdbb_status_vector;
 
+	try
+	{
 		// Find the last record passed in, and zap the keys something comparable
 		// by unsigned longword compares
 
@@ -873,6 +895,17 @@ void SORT_put(thread_db* tdbb, sort_context* scb, ULONG** record_address)
 
 		tdbb->bumpStats(RuntimeStatistics::SORT_PUTS);
 	}
+	catch (const BadAlloc&)
+	{
+		Firebird::Arg::Gds(isc_sort_mem_err).raise();
+	}
+	catch (const status_exception& ex)
+	{
+		Firebird::Arg::Gds status(isc_sort_err);
+		status.append(Firebird::Arg::StatusVector(ex.value()));
+		status.raise();
+	}
+}
 
 
 #ifdef SCROLLABLE_CURSORS
@@ -896,18 +929,10 @@ FB_UINT64 SORT_read_block(
  *      Read a block of stuff from a scratch file.
  *
  **************************************/
-	try {
 	const size_t bytes = tmp_space->read(seek, address, length);
 	fb_assert(bytes == length);
-		seek += bytes;
-	}
-	catch (const Firebird::status_exception& ex)
-	{
-		Firebird::stuff_exception(status_vector, ex);
-		ERR_post(Arg::Gds(isc_sort_err));
-	}
 #ifndef SCROLLABLE_CURSORS
-	return seek;
+	return seek + bytes;
 #endif
 }
 
@@ -959,8 +984,8 @@ void SORT_sort(thread_db* tdbb, sort_context* scb)
 
 	scb->scb_status_vector = tdbb->tdbb_status_vector;
 
-	try {
+	try
-
+	{
 		if (scb->scb_last_record != (SR*) scb->scb_end_memory)
 		{
 #ifdef SCROLLABLE_CURSORS
@@ -1038,13 +1063,14 @@ void SORT_sort(thread_db* tdbb, sort_context* scb)
 		if (count > 1)
 		{
 			fb_assert(!scb->scb_merge_pool);	// shouldn't have a pool
-		try {
+			try
+			{
 				scb->scb_merge_pool =
 					(merge_control*) scb->scb_pool->allocate((count - 1) * sizeof(merge_control));
 				merge_pool = scb->scb_merge_pool;
 				memset(merge_pool, 0, (count - 1) * sizeof(merge_control));
 			}
-		catch (const Firebird::BadAlloc&)
+			catch (const BadAlloc&)
 			{
 				delete streams;
 				throw;
@@ -1123,10 +1149,11 @@ void SORT_sort(thread_db* tdbb, sort_context* scb)
 				{
 					int mem_size = MIN(allocSize / rec_size, run->run_records) * rec_size;
 					char* mem = NULL;
-				try {
+					try
+					{
 						mem = (char*) scb->scb_pool->allocate(mem_size);
 					}
-				catch (const Firebird::BadAlloc&)
+					catch (const BadAlloc&)
 					{
 						mem_size = (mem_size / (2 * rec_size)) * rec_size;
 						if (!mem_size)
@@ -1148,10 +1175,16 @@ void SORT_sort(thread_db* tdbb, sort_context* scb)
 
 		scb->scb_flags |= scb_sorted;
 		tdbb->bumpStats(RuntimeStatistics::SORTS);
-
 	}
-	catch (const Firebird::BadAlloc&) {
+	catch (const BadAlloc&)
-		error_memory(scb);
+	{
+		Firebird::Arg::Gds(isc_sort_mem_err).raise();
+	}
+	catch (const status_exception& ex)
+	{
+		Firebird::Arg::Gds status(isc_sort_err);
+		status.append(Firebird::Arg::StatusVector(ex.value()));
+		status.raise();
 	}
 }
 
@@ -1172,18 +1205,9 @@ FB_UINT64 SORT_write_block(ISC_STATUS* status_vector,
  *      Write a block of stuff to the scratch file.
  *
  **************************************/
-	try {
 	const size_t bytes = tmp_space->write(seek, address, length);
 	fb_assert(bytes == length);
-		seek += bytes;
+	return seek + bytes;
-	}
-	catch (const Firebird::status_exception& ex)
-	{
-		Firebird::stuff_exception(status_vector, ex);
-		ERR_post(Arg::Gds(isc_sort_err));
-	}
-
-	return seek;
 }
 
 
@@ -1539,69 +1563,6 @@ static void diddle_key(UCHAR* record, sort_context* scb, bool direction)
 #endif
 
 
-static void error_memory(sort_context* scb)
-{
-/**************************************
- *
- *       e r r o r _ m e m o r y
- *
- **************************************
- *
- * Functional description
- *      Report fatal out of memory error.
- *
- **************************************/
-	ISC_STATUS* status_vector = scb->scb_status_vector;
-	fb_assert(status_vector);
-
-	Arg::Gds(isc_sort_mem_err).copyTo(status_vector);
-
-	ERR_punt();
-}
-
-
-static inline FB_UINT64 find_file_space(sort_context* scb, ULONG size)
-{
-/**************************************
- *
- *      f i n d _ f i l e _ s p a c e
- *
- **************************************
- *
- * Functional description
- *      Find space of input size in one of the
- *      open sort files.  If a free block is not
- *      available, allocate space at the end.
- *
- **************************************/
-
-	return scb->scb_space->allocateSpace(size);
-}
-
-
-static inline void free_file_space(sort_context* scb, FB_UINT64 position, ULONG size)
-{
-/**************************************
- *
- *      f r e e _ f i l e _ s p a c e
- *
- **************************************
- *
- * Functional description
- *      Release a segment of work file.
- *
- **************************************/
-
-	try
-	{
-		scb->scb_space->releaseSpace(position, size);
-	}
-	catch (const Firebird::BadAlloc&) {
-		error_memory(scb);
-	}
-}
-
-
 static sort_record* get_merge(merge_control* merge, sort_context* scb
 #ifdef SCROLLABLE_CURSORS
 							  , rse_get_mode mode
@@ -1886,14 +1847,8 @@ static void init(sort_context* scb)
 	if (scb->scb_size_memory <= MAX_SORT_BUFFER_SIZE && scb->scb_runs &&
 		scb->scb_runs->run_depth == MAX_MERGE_LEVEL)
 	{
-		void* mem = NULL;
 		const ULONG mem_size = MAX_SORT_BUFFER_SIZE * RUN_GROUP;
-		try {
+		void* const mem = scb->scb_pool->allocate_nothrow(mem_size);
-			mem = scb->scb_pool->allocate(mem_size);
-		}
-		catch (const Firebird::BadAlloc&) {
-			// do nothing
-		}
 
 		if (mem)
 		{
@@ -2246,7 +2201,7 @@ static void merge_runs(sort_context* scb, USHORT n)
 	CHECK_FILE(scb);
 
 	sort_record* q = reinterpret_cast<sort_record*>(temp_run.run_buffer);
-	FB_UINT64 seek = temp_run.run_seek = find_file_space(scb, temp_run.run_size);
+	FB_UINT64 seek = temp_run.run_seek = scb->scb_space->allocateSpace(temp_run.run_size);
 	temp_run.run_records = 0;
 
 	CHECK_FILE2(scb, &temp_run);
@@ -2286,7 +2241,7 @@ static void merge_runs(sort_context* scb, USHORT n)
 
 	if (seek - temp_run.run_seek < temp_run.run_size)
 	{
-		free_file_space(scb, seek, temp_run.run_seek + temp_run.run_size - seek);
+		scb->scb_space->releaseSpace(seek, temp_run.run_seek + temp_run.run_size - seek);
 		temp_run.run_size = seek - temp_run.run_seek;
 	}
 
@@ -2304,11 +2259,11 @@ static void merge_runs(sort_context* scb, USHORT n)
 #endif
 		// Free the sort file space associated with the run
 
-		free_file_space(scb, seek, run->run_size);
+		scb->scb_space->releaseSpace(seek, run->run_size);
 
 		if (run->run_mem_size)
 		{
-			free_file_space(scb, run->run_mem_seek, run->run_mem_size);
+			scb->scb_space->releaseSpace(run->run_mem_seek, run->run_mem_size);
 			run->run_mem_seek = run->run_mem_size = 0;
 		}
 
@@ -2516,7 +2471,7 @@ static ULONG order(sort_context* scb)
 	sort_record* output = reinterpret_cast<sort_record*>(scb->scb_last_record);
 	sort_ptr_t* lower_limit = reinterpret_cast<sort_ptr_t*>(output);
 
-	Firebird::HalfStaticArray<ULONG, 1024> record_buffer(*scb->scb_pool);
+	HalfStaticArray<ULONG, 1024> record_buffer(*scb->scb_pool);
 	SORTP* buffer = record_buffer.getBuffer(scb->scb_longs);
 
 	// Length of the key part of the record
@@ -2621,7 +2576,7 @@ static void order_and_save(sort_context* scb)
 
 	const ULONG key_length = (scb->scb_longs - SIZEOF_SR_BCKPTR_IN_LONGS) * sizeof(ULONG);
 	run->run_size = run->run_records * key_length;
-	run->run_seek = find_file_space(scb, run->run_size);
+	run->run_seek = scb->scb_space->allocateSpace(run->run_size);
 
 	char* mem = scb->scb_space->inMemory(run->run_seek, run->run_size);
 
@@ -2668,8 +2623,6 @@ static void put_run(sort_context* scb)
  *      were sorted.
  *
  **************************************/
-	try {
-
 	run_control* run = scb->scb_free_runs;
 
 	if (run) {
@@ -2701,17 +2654,13 @@ static void put_run(sort_context* scb)
 	// written, etc.
 
 	run->run_size = run->run_records * (scb->scb_longs - SIZEOF_SR_BCKPTR_IN_LONGS) * sizeof(ULONG);
-	run->run_seek = find_file_space(scb, run->run_size);
+	run->run_seek = scb->scb_space->allocateSpace(run->run_size);
 	SORT_write_block(scb->scb_status_vector, scb->scb_space,
 					 run->run_seek, (UCHAR*) scb->scb_last_record, run->run_size);
 #else
 	order_and_save(scb);
 #endif
 }
-	catch (const Firebird::BadAlloc&) {
-		error_memory(scb);
-	}
-}
 
 
 static void sort(sort_context* scb)
@@ -2851,8 +2800,7 @@ static void sort_runs_by_seek(sort_context* scb, int n)
  *
  **************************************/
 
-	Firebird::SortedArray<RunSort, Firebird::InlineStorage<RunSort, RUN_GROUP>, FB_UINT64, RunSort>
+	SortedArray<RunSort, InlineStorage<RunSort, RUN_GROUP>, FB_UINT64, RunSort> runs(*scb->scb_pool, n);
-		runs(*scb->scb_pool, n);
 
 	run_control* run;
 	for (run = scb->scb_runs; run && n; run = run->run_next, n--) {