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/* Copyright (C) 2010 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* gathers statistics from all file modules.
*/
#ifndef INCLUDED_FILE_STATS
#define INCLUDED_FILE_STATS
#include "lib/posix/posix_aio.h" // LIO_READ, LIO_WRITE
#define FILE_STATS_ENABLED 0
enum FileIOImplentation { FI_LOWIO, FI_AIO, FI_BCACHE, FI_MAX_IDX };
enum CacheRet { CR_HIT, CR_MISS };
#if FILE_STATS_ENABLED
// vfs
extern void stats_vfs_file_add(size_t file_size);
extern void stats_vfs_file_remove(size_t file_size);
extern void stats_vfs_init_start();
extern void stats_vfs_init_finish();
// file
// currently not called because string_pool is now in lib/allocators
extern void stats_unique_name(size_t name_len);
extern void stats_open();
extern void stats_close();
// file_buf
extern void stats_buf_alloc(size_t size, size_t alignedSize);
extern void stats_buf_free();
extern void stats_buf_ref();
// file_io
extern void stats_io_user_request(size_t user_size);
// this is used to measure effective throughput for the two
// synchronous IO variants.
// note: improved measurements of the actual aio throughput by instrumenting
// issue/wait doesn't work because IOManager's decompression may cause us to
// miss the exact end of IO, thus throwing off measurements.
class ScopedIoMonitor
{
public:
ScopedIoMonitor();
~ScopedIoMonitor();
void NotifyOfSuccess(FileIOImplentation fi, int opcode, off_t size);
private:
double m_startTime;
};
extern void stats_cb_start();
extern void stats_cb_finish();
// file_cache
extern void stats_block_cache(CacheRet cr);
// archive builder
extern void stats_ab_connection(bool already_exists);
extern void file_stats_dump();
#else
#define stats_vfs_file_add(file_size)
#define stats_vfs_file_remove(file_size)
#define stats_vfs_init_start()
#define stats_vfs_init_finish()
#define stats_unique_name(name_len)
#define stats_open()
#define stats_close()
#define stats_buf_alloc(size, alignedSize)
#define stats_buf_free()
#define stats_buf_ref()
#define stats_io_user_request(user_size)
class ScopedIoMonitor
{
public:
ScopedIoMonitor() {}
~ScopedIoMonitor() {}
void NotifyOfSuccess(FileIOImplentation UNUSED(fi), int UNUSED(opcode), off_t UNUSED(size)) {}
};
#define stats_cb_start()
#define stats_cb_finish()
#define stats_block_cache(cr)
#define stats_ab_connection(already_exists)
#define file_stats_dump()
#endif
#endif // #ifndef INCLUDED_FILE_STATS
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