source: libcfa/src/concurrency/stats.hfa @ a80db97

#pragma once

#include <stdint.h>

enum {
        CFA_STATS_READY_Q  = 0x01,
        CFA_STATS_IO = 0x02,
};

#if defined(__CFA_NO_STATISTICS__)
        struct __stats_t;
        static inline void __init_stats( struct __stats_t * ) {}
        static inline void __tally_stats( struct __stats_t *, struct __stats_t * ) {}
        static inline void __print_stats( struct __stats_t *, int, const char *, const char *, void * ) {}
#else

        struct __attribute__((aligned(64))) __stats_readQ_t {
                struct {
                        // Push statistic
                        struct {
                                // number of attemps at pushing something
                                volatile uint64_t attempt;

                                // number of successes at pushing
                                volatile uint64_t success;

                                // number of attemps at pushing something to preferred queues
                                volatile uint64_t local;

                                // number of successes at pushing to preferred queues
                                volatile uint64_t lsuccess;
                        } push;

                        // Pop statistic
                        struct {
                                // number of reads of the mask
                                // picking an empty __cfa_readyQ_mask_t counts here
                                // but not as an attempt
                                volatile uint64_t probe;

                                // number of attemps at poping something
                                volatile uint64_t attempt;

                                // number of successes at poping
                                volatile uint64_t success;

                                // number of attemps at poping something to preferred queues
                                volatile uint64_t local;

                                // number of successes at poping to preferred queues
                                volatile uint64_t lsuccess;
                        } pop;
                } pick;
                struct {
                        volatile uint64_t migration;
                } threads;
                struct {
                        volatile uint64_t halts;
                        volatile uint64_t cancels;
                        volatile uint64_t wakes;
                        volatile uint64_t exits;
                } sleep;
        };

        #if defined(CFA_HAVE_LINUX_IO_URING_H)
                struct __attribute__((aligned(64))) __stats_io_t{
                        struct {
                                volatile uint64_t fast;
                                volatile uint64_t slow;
                                volatile uint64_t fail;
                                volatile uint64_t revoke;
                                volatile uint64_t block;
                        } alloc;
                        struct {
                                volatile uint64_t fast;
                                volatile uint64_t slow;
                        } submit;
                        struct {
                                volatile uint64_t external;
                        } flush;
                        struct {
                                volatile uint64_t count;
                                volatile uint64_t submitted;
                                volatile uint64_t completed;
                                volatile uint64_t blocks;
                                struct {
                                        volatile uint64_t busy;
                                } errors;
                        } calls;
                        struct {
                                volatile uint64_t sleeps;
                        } poller;
                };
        #endif

        struct __attribute__((aligned(128))) __stats_t {
                __stats_readQ_t ready;
                #if defined(CFA_HAVE_LINUX_IO_URING_H)
                        __stats_io_t    io;
                #endif
        };

        void __init_stats ( struct __stats_t * );
        void __tally_stats( struct __stats_t *, struct __stats_t * );
        void __print_stats( struct __stats_t *, int, const char *, const char *, void * );
#endif