//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.txt for details.
//
//===----------------------------------------------------------------------===//

#include "kmp_config.h"
#include "ittnotify_config.h"

#if ITT_PLATFORM==ITT_PLATFORM_WIN
#define PATH_MAX 512
#else /* ITT_PLATFORM!=ITT_PLATFORM_WIN */
#include <limits.h>
#include <dlfcn.h>
#include <errno.h>
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>

#define INTEL_NO_MACRO_BODY 
#define INTEL_ITTNOTIFY_API_PRIVATE
#include "ittnotify.h"
#include "legacy/ittnotify.h"

#include "disable_warnings.h"

static const char api_version[] = API_VERSION "\0\n@(#) $Revision: 43375 $\n";

#define _N_(n) ITT_JOIN(INTEL_ITTNOTIFY_PREFIX,n)

#if ITT_OS==ITT_OS_WIN
static const char* ittnotify_lib_name = "libittnotify.dll";
#elif ITT_OS==ITT_OS_LINUX
static const char* ittnotify_lib_name = "libittnotify.so";
#elif ITT_OS==ITT_OS_MAC
static const char* ittnotify_lib_name = "libittnotify.dylib";
#else
#error Unsupported or unknown OS.
#endif

#ifdef __ANDROID__
#include <android/log.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/limits.h>

#ifdef ITT_ANDROID_LOG
    #define ITT_ANDROID_LOG_TAG   "INTEL_VTUNE_USERAPI"
    #define ITT_ANDROID_LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, ITT_ANDROID_LOG_TAG, __VA_ARGS__))
    #define ITT_ANDROID_LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, ITT_ANDROID_LOG_TAG, __VA_ARGS__))
    #define ITT_ANDROID_LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR,ITT_ANDROID_LOG_TAG, __VA_ARGS__))
    #define ITT_ANDROID_LOGD(...) ((void)__android_log_print(ANDROID_LOG_DEBUG,ITT_ANDROID_LOG_TAG, __VA_ARGS__))
#else
    #define ITT_ANDROID_LOGI(...)
    #define ITT_ANDROID_LOGW(...)
    #define ITT_ANDROID_LOGE(...)
    #define ITT_ANDROID_LOGD(...)
#endif

/* default location of userapi collector on Android */
#define ANDROID_ITTNOTIFY_DEFAULT_PATH  "/data/data/com.intel.vtune/intel/libittnotify.so"
#endif


#ifndef LIB_VAR_NAME
#if ITT_ARCH==ITT_ARCH_IA32 || ITT_ARCH==ITT_ARCH_ARM
#define LIB_VAR_NAME INTEL_LIBITTNOTIFY32
#else
#define LIB_VAR_NAME INTEL_LIBITTNOTIFY64
#endif
#endif /* LIB_VAR_NAME */

#define ITT_MUTEX_INIT_AND_LOCK(p) {                                 \
        if (!p.mutex_initialized)                                    \
        {                                                            \
            if (__itt_interlocked_increment(&p.atomic_counter) == 1) \
            {                                                        \
                __itt_mutex_init(&p.mutex);                          \
                p.mutex_initialized = 1;                             \
            }                                                        \
            else                                                     \
                while (!p.mutex_initialized)                         \
                    __itt_thread_yield();                            \
        }                                                            \
        __itt_mutex_lock(&p.mutex);                                  \
}

const int _N_(err) = 0;

typedef int (__itt_init_ittlib_t)(const char*, __itt_group_id);

/* this define used to control initialization function name. */
#ifndef __itt_init_ittlib_name
ITT_EXTERN_C int _N_(init_ittlib)(const char*, __itt_group_id);
static __itt_init_ittlib_t* __itt_init_ittlib_ptr = _N_(init_ittlib);
#define __itt_init_ittlib_name __itt_init_ittlib_ptr
#endif /* __itt_init_ittlib_name */

typedef void (__itt_fini_ittlib_t)(void);

/* this define used to control finalization function name. */
#ifndef __itt_fini_ittlib_name
ITT_EXTERN_C void _N_(fini_ittlib)(void);
static __itt_fini_ittlib_t* __itt_fini_ittlib_ptr = _N_(fini_ittlib);
#define __itt_fini_ittlib_name __itt_fini_ittlib_ptr
#endif /* __itt_fini_ittlib_name */

/* building pointers to imported funcs */
#undef ITT_STUBV
#undef ITT_STUB
#define ITT_STUB(api,type,name,args,params,ptr,group,format)   \
static type api ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)) args;\
typedef type api ITT_JOIN(_N_(name),_t) args;                  \
ITT_EXTERN_C_BEGIN ITT_JOIN(_N_(name),_t)* ITTNOTIFY_NAME(name) = ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)); ITT_EXTERN_C_END \
static type api ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)) args \
{                                                              \
    __itt_init_ittlib_name(NULL, __itt_group_all);             \
    if (ITTNOTIFY_NAME(name) && ITTNOTIFY_NAME(name) != ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init))) \
        return ITTNOTIFY_NAME(name) params;                    \
    else                                                       \
        return (type)0;                                        \
}

#define ITT_STUBV(api,type,name,args,params,ptr,group,format)  \
static type api ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)) args;\
typedef type api ITT_JOIN(_N_(name),_t) args;                  \
ITT_EXTERN_C_BEGIN ITT_JOIN(_N_(name),_t)* ITTNOTIFY_NAME(name) = ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)); ITT_EXTERN_C_END \
static type api ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)) args \
{                                                              \
    __itt_init_ittlib_name(NULL, __itt_group_all);             \
    if (ITTNOTIFY_NAME(name) && ITTNOTIFY_NAME(name) != ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init))) \
        ITTNOTIFY_NAME(name) params;                           \
    else                                                       \
        return;                                                \
}

#undef __ITT_INTERNAL_INIT
#include "ittnotify_static.h"

#undef ITT_STUB
#undef ITT_STUBV
#define ITT_STUB(api,type,name,args,params,ptr,group,format)   \
static type api ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)) args;\
typedef type api ITT_JOIN(_N_(name),_t) args;                  \
ITT_EXTERN_C_BEGIN ITT_JOIN(_N_(name),_t)* ITTNOTIFY_NAME(name) = ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)); ITT_EXTERN_C_END

#define ITT_STUBV(api,type,name,args,params,ptr,group,format)  \
static type api ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)) args;\
typedef type api ITT_JOIN(_N_(name),_t) args;                  \
ITT_EXTERN_C_BEGIN ITT_JOIN(_N_(name),_t)* ITTNOTIFY_NAME(name) = ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)); ITT_EXTERN_C_END

#define __ITT_INTERNAL_INIT
#include "ittnotify_static.h"
#undef __ITT_INTERNAL_INIT

ITT_GROUP_LIST(group_list);

#pragma pack(push, 8)

typedef struct ___itt_group_alias
{
    const char*    env_var;
    __itt_group_id groups;
} __itt_group_alias;

static __itt_group_alias group_alias[] = {
    { "KMP_FOR_TPROFILE", (__itt_group_id)(__itt_group_control | __itt_group_thread | __itt_group_sync  | __itt_group_mark) },
    { "KMP_FOR_TCHECK",   (__itt_group_id)(__itt_group_control | __itt_group_thread | __itt_group_sync  | __itt_group_fsync | __itt_group_mark | __itt_group_suppress) },
    { NULL,               (__itt_group_none) },
    { api_version,        (__itt_group_none) } /* !!! Just to avoid unused code elimination !!! */
};

#pragma pack(pop)

#if ITT_PLATFORM==ITT_PLATFORM_WIN
#pragma warning(push)
#pragma warning(disable: 4054) /* warning C4054: 'type cast' : from function pointer 'XXX' to data pointer 'void *' */
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */

static __itt_api_info api_list[] = {
/* Define functions with static implementation */
#undef ITT_STUB
#undef ITT_STUBV
#define ITT_STUB(api,type,name,args,params,nameindll,group,format) { ITT_TO_STR(ITT_JOIN(__itt_,nameindll)), (void**)(void*)&ITTNOTIFY_NAME(name), (void*)(size_t)&ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)), (void*)(size_t)&ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)), (__itt_group_id)(group)},
#define ITT_STUBV ITT_STUB
#define __ITT_INTERNAL_INIT
#include "ittnotify_static.h"
#undef __ITT_INTERNAL_INIT
/* Define functions without static implementation */
#undef ITT_STUB
#undef ITT_STUBV
#define ITT_STUB(api,type,name,args,params,nameindll,group,format) {ITT_TO_STR(ITT_JOIN(__itt_,nameindll)), (void**)(void*)&ITTNOTIFY_NAME(name), (void*)(size_t)&ITT_VERSIONIZE(ITT_JOIN(_N_(name),_init)), NULL, (__itt_group_id)(group)},
#define ITT_STUBV ITT_STUB
#include "ittnotify_static.h"
    {NULL, NULL, NULL, NULL, __itt_group_none}
};

#if ITT_PLATFORM==ITT_PLATFORM_WIN
#pragma warning(pop)
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */

/* private, init thread info item. used for internal purposes */
static __itt_thread_info init_thread_info = {
    (const char*)NULL,                        /* nameA */
#if defined(UNICODE) || defined(_UNICODE)
    (const wchar_t*)NULL,                     /* nameW */
#else
    (void*)NULL,                              /* nameW */
#endif
    0,                                        /* tid */
    __itt_thread_normal,                      /* state */
    0,                                        /* extra1 */
    (void*)NULL,                              /* extra2 */
    (__itt_thread_info*)NULL                  /* next */
};

/* private, NULL domain item. used for internal purposes */
static __itt_domain null_domain = {
    0,                                        /* flags:  disabled by default */
    (const char*)NULL,                        /* nameA */
#if defined(UNICODE) || defined(_UNICODE)
    (const wchar_t*)NULL,                     /* nameW */
#else
    (void*)NULL,                              /* nameW */
#endif
    0,                                        /* extra1 */
    (void*)NULL,                              /* extra2 */
    (__itt_domain*)NULL                       /* next */
};

/* private, NULL string handle item. used for internal purposes */
static __itt_string_handle null_string_handle = {
    (const char*)NULL,                        /* strA */
#if defined(UNICODE) || defined(_UNICODE)
    (const wchar_t*)NULL,                     /* strW */
#else
    (void*)NULL,                              /* strW */
#endif
    0,                                        /* extra1 */
    (void*)NULL,                              /* extra2 */
    (__itt_string_handle*)NULL                /* next */
};

static const char dll_path[PATH_MAX] = { 0 };

/* static part descriptor which handles. all notification api attributes. */
__itt_global _N_(_ittapi_global) = {
    ITT_MAGIC,                                     /* identification info */
    ITT_MAJOR, ITT_MINOR, API_VERSION_BUILD,       /* version info */
    0,                                             /* api_initialized */
    0,                                             /* mutex_initialized */
    0,                                             /* atomic_counter */
    MUTEX_INITIALIZER,                             /* mutex */
    NULL,                                          /* dynamic library handle */
    NULL,                                          /* error_handler */
    (const char**)&dll_path,                       /* dll_path_ptr */
    (__itt_api_info*)&api_list,                    /* api_list_ptr */
    NULL,                                          /* next __itt_global */
    (__itt_thread_info*)&init_thread_info,         /* thread_list */
    (__itt_domain*)&null_domain,                   /* domain_list */
    (__itt_string_handle*)&null_string_handle,     /* string_list */
    __itt_collection_normal                        /* collection state */
};

typedef void (__itt_api_init_t)(__itt_global*, __itt_group_id);
typedef void (__itt_api_fini_t)(__itt_global*);

/* ========================================================================= */

#ifdef ITT_NOTIFY_EXT_REPORT
ITT_EXTERN_C void _N_(error_handler)(__itt_error_code, va_list args);
#endif /* ITT_NOTIFY_EXT_REPORT */

#if ITT_PLATFORM==ITT_PLATFORM_WIN
#pragma warning(push)
#pragma warning(disable: 4055) /* warning C4055: 'type cast' : from data pointer 'void *' to function pointer 'XXX' */
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */

static void __itt_report_error(__itt_error_code code, ...)
{
    va_list args;
    va_start(args, code);
    if (_N_(_ittapi_global).error_handler != NULL)
    {
        __itt_error_handler_t* handler = (__itt_error_handler_t*)(size_t)_N_(_ittapi_global).error_handler;
        handler(code, args);
    }
#ifdef ITT_NOTIFY_EXT_REPORT
    _N_(error_handler)(code, args);
#endif /* ITT_NOTIFY_EXT_REPORT */
    va_end(args);
}

#if ITT_PLATFORM==ITT_PLATFORM_WIN
#pragma warning(pop)
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */

#if ITT_PLATFORM==ITT_PLATFORM_WIN
static __itt_domain* ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(domain_createW),_init))(const wchar_t* name)
{
    __itt_domain *h_tail, *h;

    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
        if (ITTNOTIFY_NAME(domain_createW) && ITTNOTIFY_NAME(domain_createW) != ITT_VERSIONIZE(ITT_JOIN(_N_(domain_createW),_init)))
            return ITTNOTIFY_NAME(domain_createW)(name);
    }

    if (name == NULL)
        return _N_(_ittapi_global).domain_list;

    ITT_MUTEX_INIT_AND_LOCK(_N_(_ittapi_global));
    for (h_tail = NULL, h = _N_(_ittapi_global).domain_list; h != NULL; h_tail = h, h = h->next)
        if (h->nameW != NULL && !wcscmp(h->nameW, name))
            break;
    if (h == NULL) {
        NEW_DOMAIN_W(&_N_(_ittapi_global),h,h_tail,name);
    }
    __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
    return h;
}

static __itt_domain* ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(domain_createA),_init))(const char* name)
#else  /* ITT_PLATFORM!=ITT_PLATFORM_WIN */
static __itt_domain* ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(domain_create),_init))(const char* name)
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
{
    __itt_domain *h_tail, *h;

    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
#if ITT_PLATFORM==ITT_PLATFORM_WIN
        if (ITTNOTIFY_NAME(domain_createA) && ITTNOTIFY_NAME(domain_createA) != ITT_VERSIONIZE(ITT_JOIN(_N_(domain_createA),_init)))
            return ITTNOTIFY_NAME(domain_createA)(name);
#else
        if (ITTNOTIFY_NAME(domain_create) && ITTNOTIFY_NAME(domain_create) != ITT_VERSIONIZE(ITT_JOIN(_N_(domain_create),_init)))
            return ITTNOTIFY_NAME(domain_create)(name);
#endif
    }

    if (name == NULL)
        return _N_(_ittapi_global).domain_list;

    ITT_MUTEX_INIT_AND_LOCK(_N_(_ittapi_global));
    for (h_tail = NULL, h = _N_(_ittapi_global).domain_list; h != NULL; h_tail = h, h = h->next)
        if (h->nameA != NULL && !__itt_fstrcmp(h->nameA, name))
            break;
    if (h == NULL) {
        NEW_DOMAIN_A(&_N_(_ittapi_global),h,h_tail,name);
    }
    __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
    return h;
}

#if ITT_PLATFORM==ITT_PLATFORM_WIN
static __itt_string_handle* ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(string_handle_createW),_init))(const wchar_t* name)
{
    __itt_string_handle *h_tail, *h;

    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
        if (ITTNOTIFY_NAME(string_handle_createW) && ITTNOTIFY_NAME(string_handle_createW) != ITT_VERSIONIZE(ITT_JOIN(_N_(string_handle_createW),_init)))
            return ITTNOTIFY_NAME(string_handle_createW)(name);
    }

    if (name == NULL)
        return _N_(_ittapi_global).string_list;

    ITT_MUTEX_INIT_AND_LOCK(_N_(_ittapi_global));
    for (h_tail = NULL, h = _N_(_ittapi_global).string_list; h != NULL; h_tail = h, h = h->next)
        if (h->strW != NULL && !wcscmp(h->strW, name))
            break;
    if (h == NULL) {
        NEW_STRING_HANDLE_W(&_N_(_ittapi_global),h,h_tail,name);
    }
    __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
    return h;
}

static __itt_string_handle* ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(string_handle_createA),_init))(const char* name)
#else  /* ITT_PLATFORM!=ITT_PLATFORM_WIN */
static __itt_string_handle* ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(string_handle_create),_init))(const char* name)
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
{
    __itt_string_handle *h_tail, *h;

    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
#if ITT_PLATFORM==ITT_PLATFORM_WIN
        if (ITTNOTIFY_NAME(string_handle_createA) && ITTNOTIFY_NAME(string_handle_createA) != ITT_VERSIONIZE(ITT_JOIN(_N_(string_handle_createA),_init)))
            return ITTNOTIFY_NAME(string_handle_createA)(name);
#else
        if (ITTNOTIFY_NAME(string_handle_create) && ITTNOTIFY_NAME(string_handle_create) != ITT_VERSIONIZE(ITT_JOIN(_N_(string_handle_create),_init)))
            return ITTNOTIFY_NAME(string_handle_create)(name);
#endif
    }

    if (name == NULL)
        return _N_(_ittapi_global).string_list;

    ITT_MUTEX_INIT_AND_LOCK(_N_(_ittapi_global));
    for (h_tail = NULL, h = _N_(_ittapi_global).string_list; h != NULL; h_tail = h, h = h->next)
        if (h->strA != NULL && !__itt_fstrcmp(h->strA, name))
            break;
    if (h == NULL) {
        NEW_STRING_HANDLE_A(&_N_(_ittapi_global),h,h_tail,name);
    }
    __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
    return h;
}

/* -------------------------------------------------------------------------- */

static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(pause),_init))(void)
{
    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
        if (ITTNOTIFY_NAME(pause) && ITTNOTIFY_NAME(pause) != ITT_VERSIONIZE(ITT_JOIN(_N_(pause),_init)))
        {
            ITTNOTIFY_NAME(pause)();
            return;
        }
    }
    _N_(_ittapi_global).state = __itt_collection_paused;
}

static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(resume),_init))(void)
{
    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
        if (ITTNOTIFY_NAME(resume) && ITTNOTIFY_NAME(resume) != ITT_VERSIONIZE(ITT_JOIN(_N_(resume),_init)))
        {
            ITTNOTIFY_NAME(resume)();
            return;
        }
    }
    _N_(_ittapi_global).state = __itt_collection_normal;
}

#if ITT_PLATFORM==ITT_PLATFORM_WIN
static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_nameW),_init))(const wchar_t* name)
{
    TIDT tid = __itt_thread_id();
    __itt_thread_info *h_tail, *h;

    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
        if (ITTNOTIFY_NAME(thread_set_nameW) && ITTNOTIFY_NAME(thread_set_nameW) != ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_nameW),_init)))
        {
            ITTNOTIFY_NAME(thread_set_nameW)(name);
            return;
        }
    }

    __itt_mutex_lock(&_N_(_ittapi_global).mutex);
    for (h_tail = NULL, h = _N_(_ittapi_global).thread_list; h != NULL; h_tail = h, h = h->next)
        if (h->tid == tid)
            break;
    if (h == NULL) {
        NEW_THREAD_INFO_W(&_N_(_ittapi_global), h, h_tail, tid, __itt_thread_normal, name);
    }
    else
    {
        h->nameW = name ? _wcsdup(name) : NULL;
    }
    __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
}

static int ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thr_name_setW),_init))(const wchar_t* name, int namelen)
{
    namelen = namelen;
    ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_nameW),_init))(name);
    return 0;
}

static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_nameA),_init))(const char* name)
#else  /* ITT_PLATFORM==ITT_PLATFORM_WIN */
static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_name),_init))(const char* name)
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
{
    TIDT tid = __itt_thread_id();
    __itt_thread_info *h_tail, *h;

    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
#if ITT_PLATFORM==ITT_PLATFORM_WIN
        if (ITTNOTIFY_NAME(thread_set_nameA) && ITTNOTIFY_NAME(thread_set_nameA) != ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_nameA),_init)))
        {
            ITTNOTIFY_NAME(thread_set_nameA)(name);
            return;
        }
#else  /* ITT_PLATFORM==ITT_PLATFORM_WIN */
        if (ITTNOTIFY_NAME(thread_set_name) && ITTNOTIFY_NAME(thread_set_name) != ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_name),_init)))
        {
            ITTNOTIFY_NAME(thread_set_name)(name);
            return;
        }
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
    }

    __itt_mutex_lock(&_N_(_ittapi_global).mutex);
    for (h_tail = NULL, h = _N_(_ittapi_global).thread_list; h != NULL; h_tail = h, h = h->next)
        if (h->tid == tid)
            break;
    if (h == NULL) {
        NEW_THREAD_INFO_A(&_N_(_ittapi_global), h, h_tail, tid, __itt_thread_normal, name);
    }
    else
    {
        h->nameA = name ? __itt_fstrdup(name) : NULL;
    }
    __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
}

#if ITT_PLATFORM==ITT_PLATFORM_WIN
static int ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thr_name_setA),_init))(const char* name, int namelen)
{
    namelen = namelen;
    ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_nameA),_init))(name);
    return 0;
}
#else  /* ITT_PLATFORM==ITT_PLATFORM_WIN */
static int ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thr_name_set),_init))(const char* name, int namelen)
{
    namelen = namelen;
    ITT_VERSIONIZE(ITT_JOIN(_N_(thread_set_name),_init))(name);
    return 0;
}
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */

static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thread_ignore),_init))(void)
{
    TIDT tid = __itt_thread_id();
    __itt_thread_info *h_tail, *h;

    if (!_N_(_ittapi_global).api_initialized && _N_(_ittapi_global).thread_list->tid == 0)
    {
        __itt_init_ittlib_name(NULL, __itt_group_all);
        if (ITTNOTIFY_NAME(thread_ignore) && ITTNOTIFY_NAME(thread_ignore) != ITT_VERSIONIZE(ITT_JOIN(_N_(thread_ignore),_init)))
        {
            ITTNOTIFY_NAME(thread_ignore)();
            return;
        }
    }

    __itt_mutex_lock(&_N_(_ittapi_global).mutex);
    for (h_tail = NULL, h = _N_(_ittapi_global).thread_list; h != NULL; h_tail = h, h = h->next)
        if (h->tid == tid)
            break;
    if (h == NULL) {
        static const char* name = "unknown";
        NEW_THREAD_INFO_A(&_N_(_ittapi_global), h, h_tail, tid, __itt_thread_ignored, name);
    }
    else
    {
        h->state = __itt_thread_ignored;
    }
    __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
}

static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(thr_ignore),_init))(void)
{
    ITT_VERSIONIZE(ITT_JOIN(_N_(thread_ignore),_init))();
}

static void ITTAPI ITT_VERSIONIZE(ITT_JOIN(_N_(enable_attach),_init))(void)
{
#ifdef __ANDROID__
    /*
     * if LIB_VAR_NAME env variable were set before then stay previous value
     * else set default path
    */
    setenv(ITT_TO_STR(LIB_VAR_NAME), ANDROID_ITTNOTIFY_DEFAULT_PATH, 0);
#endif
}

/* -------------------------------------------------------------------------- */

static const char* __itt_fsplit(const char* s, const char* sep, const char** out, int* len)
{
    int i;
    int j;

    if (!s || !sep || !out || !len)
        return NULL;

    for (i = 0; s[i]; i++)
    {
        int b = 0;
        for (j = 0; sep[j]; j++)
            if (s[i] == sep[j])
            {
                b = 1;
                break;
            }
        if (!b)
            break;
    }

    if (!s[i])
        return NULL;

    *len = 0;
    *out = &s[i];

    for (; s[i]; i++, (*len)++)
    {
        int b = 0;
        for (j = 0; sep[j]; j++)
            if (s[i] == sep[j])
            {
                b = 1;
                break;
            }
        if (b)
            break;
    }

    for (; s[i]; i++)
    {
        int b = 0;
        for (j = 0; sep[j]; j++)
            if (s[i] == sep[j])
            {
                b = 1;
                break;
            }
        if (!b)
            break;
    }

    return &s[i];
}

/* This function return value of env variable that placed into static buffer.
 * !!! The same static buffer is used for subsequent calls. !!!
 * This was done to aviod dynamic allocation for few calls.
 * Actually we need this function only four times.
 */
static const char* __itt_get_env_var(const char* name)
{
#define MAX_ENV_VALUE_SIZE 4086
    static char  env_buff[MAX_ENV_VALUE_SIZE];
    static char* env_value = (char*)env_buff;

    if (name != NULL)
    {
#if ITT_PLATFORM==ITT_PLATFORM_WIN
        size_t max_len = MAX_ENV_VALUE_SIZE - (size_t)(env_value - env_buff);
        DWORD rc = GetEnvironmentVariableA(name, env_value, (DWORD)max_len);
        if (rc >= max_len)
            __itt_report_error(__itt_error_env_too_long, name, (size_t)rc - 1, (size_t)(max_len - 1));
        else if (rc > 0)
        {
            const char* ret = (const char*)env_value;
            env_value += rc + 1;
            return ret;
        }
        else
        {
            /* If environment variable is empty, GetEnvirornmentVariables()
             * returns zero (number of characters (not including terminating null),
             * and GetLastError() returns ERROR_SUCCESS. */
            DWORD err = GetLastError();
            if (err == ERROR_SUCCESS)
                return env_value;

            if (err != ERROR_ENVVAR_NOT_FOUND)
                __itt_report_error(__itt_error_cant_read_env, name, (int)err);
        }
#else  /* ITT_PLATFORM!=ITT_PLATFORM_WIN */
        char* env = getenv(name);
        if (env != NULL)
        {
            size_t len = strlen(env);
            size_t max_len = MAX_ENV_VALUE_SIZE - (size_t)(env_value - env_buff);
            if (len < max_len)
            {
                const char* ret = (const char*)env_value;
                strncpy(env_value, env, len + 1);
                env_value += len + 1;
                return ret;
            } else
                __itt_report_error(__itt_error_env_too_long, name, (size_t)len, (size_t)(max_len - 1));
        }
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
    }
    return NULL;
}

static const char* __itt_get_lib_name(void)
{
    const char* lib_name = __itt_get_env_var(ITT_TO_STR(LIB_VAR_NAME));

#ifdef __ANDROID__
    if (lib_name == NULL)
    {
        const char* const system_wide_marker_filename = "/data/local/tmp/com.intel.itt.collector_lib";
        int itt_marker_file_fd = open(system_wide_marker_filename, O_RDONLY);
        ssize_t res = 0;

        if (itt_marker_file_fd == -1)
        {
            const pid_t my_pid = getpid();
            char cmdline_path[PATH_MAX] = {0};
            char package_name[PATH_MAX] = {0};
            char app_sandbox_file[PATH_MAX] = {0};
            int cmdline_fd = 0;

            ITT_ANDROID_LOGI("Unable to open system-wide marker file.");
            snprintf(cmdline_path, PATH_MAX - 1, "/proc/%d/cmdline", my_pid);
            ITT_ANDROID_LOGI("CMD file: %s\n", cmdline_path);
            cmdline_fd = open(cmdline_path, O_RDONLY);
            if (cmdline_fd == -1)
            {
                ITT_ANDROID_LOGE("Unable to open %s file!", cmdline_path);
                return lib_name;
            }
            res = read(cmdline_fd, package_name, PATH_MAX - 1);
            if (res == -1)
            {
                ITT_ANDROID_LOGE("Unable to read %s file!", cmdline_path);
                res = close(cmdline_fd);
                if (res == -1)
                {
                    ITT_ANDROID_LOGE("Unable to close %s file!", cmdline_path);
                }
                return lib_name;
            }
            res = close(cmdline_fd);
            if (res == -1)
            {
                ITT_ANDROID_LOGE("Unable to close %s file!", cmdline_path);
                return lib_name;
            }
            ITT_ANDROID_LOGI("Package name: %s\n", package_name);
            snprintf(app_sandbox_file, PATH_MAX - 1, "/data/data/%s/com.intel.itt.collector_lib", package_name);
            ITT_ANDROID_LOGI("Lib marker file name: %s\n", app_sandbox_file);
            itt_marker_file_fd = open(app_sandbox_file, O_RDONLY);
            if (itt_marker_file_fd == -1)
            {
                ITT_ANDROID_LOGE("Unable to open app marker file!");
                return lib_name;
            }
        }

        {
            char itt_lib_name[PATH_MAX] = {0};

            res = read(itt_marker_file_fd, itt_lib_name, PATH_MAX - 1);
            if (res == -1)
            {
                ITT_ANDROID_LOGE("Unable to read %s file!", itt_marker_file_fd);
                res = close(itt_marker_file_fd);
                if (res == -1)
                {
                    ITT_ANDROID_LOGE("Unable to close %s file!", itt_marker_file_fd);
                }
                return lib_name;
            }
            ITT_ANDROID_LOGI("ITT Lib path: %s", itt_lib_name);
            res = close(itt_marker_file_fd);
            if (res == -1)
            {
                ITT_ANDROID_LOGE("Unable to close %s file!", itt_marker_file_fd);
                return lib_name;
            }
            ITT_ANDROID_LOGI("Set env");
            res = setenv(ITT_TO_STR(LIB_VAR_NAME), itt_lib_name, 0);
            if (res == -1)
            {
                ITT_ANDROID_LOGE("Unable to set env var!");
                return lib_name;
            }
            lib_name = __itt_get_env_var(ITT_TO_STR(LIB_VAR_NAME));
            ITT_ANDROID_LOGI("ITT Lib path from env: %s", itt_lib_name);
        }
    }
#endif

    return lib_name;
}

#ifndef min
#define min(a,b) (a) < (b) ? (a) : (b)
#endif /* min */

static __itt_group_id __itt_get_groups(void)
{
    register int i;
    __itt_group_id res = __itt_group_none;
    const char* var_name  = "INTEL_ITTNOTIFY_GROUPS";
    const char* group_str = __itt_get_env_var(var_name);

    if (group_str != NULL)
    {
        int len;
        char gr[255];
        const char* chunk;
        while ((group_str = __itt_fsplit(group_str, ",; ", &chunk, &len)) != NULL)
        {
            __itt_fstrcpyn(gr, chunk, sizeof(gr) - 1);
            gr[min(len, (int)(sizeof(gr) - 1))] = 0;

            for (i = 0; group_list[i].name != NULL; i++)
            {
                if (!__itt_fstrcmp(gr, group_list[i].name))
                {
                    res = (__itt_group_id)(res | group_list[i].id);
                    break;
                }
            }
        }
        /* TODO: !!! Workaround for bug with warning for unknown group !!!
         * Should be fixed in new initialization scheme.
         * Now the following groups should be set always. */
        for (i = 0; group_list[i].id != __itt_group_none; i++)
            if (group_list[i].id != __itt_group_all &&
                group_list[i].id > __itt_group_splitter_min &&
                group_list[i].id < __itt_group_splitter_max)
                res = (__itt_group_id)(res | group_list[i].id);
        return res;
    }
    else
    {
        for (i = 0; group_alias[i].env_var != NULL; i++)
            if (__itt_get_env_var(group_alias[i].env_var) != NULL)
                return group_alias[i].groups;
    }

    return res;
}

static int __itt_lib_version(lib_t lib)
{
    if (lib == NULL)
        return 0;
    if (__itt_get_proc(lib, "__itt_api_init"))
        return 2;
    if (__itt_get_proc(lib, "__itt_api_version"))
        return 1;
    return 0;
}

/* It's not used right now! Comment it out to avoid warnings.
static void __itt_reinit_all_pointers(void)
{
    register int i;
    // Fill all pointers with initial stubs
    for (i = 0; _N_(_ittapi_global).api_list_ptr[i].name != NULL; i++)
        *_N_(_ittapi_global).api_list_ptr[i].func_ptr = _N_(_ittapi_global).api_list_ptr[i].init_func;
}
*/

static void __itt_nullify_all_pointers(void)
{
    register int i;
    /* Nulify all pointers except domain_create and string_handle_create */
    for (i = 0; _N_(_ittapi_global).api_list_ptr[i].name != NULL; i++)
        *_N_(_ittapi_global).api_list_ptr[i].func_ptr = _N_(_ittapi_global).api_list_ptr[i].null_func;
}

#if ITT_PLATFORM==ITT_PLATFORM_WIN
#pragma warning(push)
#pragma warning(disable: 4054) /* warning C4054: 'type cast' : from function pointer 'XXX' to data pointer 'void *' */
#pragma warning(disable: 4055) /* warning C4055: 'type cast' : from data pointer 'void *' to function pointer 'XXX' */
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */

ITT_EXTERN_C void _N_(fini_ittlib)(void)
{
    __itt_api_fini_t* __itt_api_fini_ptr;
    static volatile TIDT current_thread = 0;

    if (_N_(_ittapi_global).api_initialized)
    {
        __itt_mutex_lock(&_N_(_ittapi_global).mutex);
        if (_N_(_ittapi_global).api_initialized)
        {
            if (current_thread == 0)
            {
                current_thread = __itt_thread_id();
                __itt_api_fini_ptr = (__itt_api_fini_t*)(size_t)__itt_get_proc(_N_(_ittapi_global).lib, "__itt_api_fini");
                if (__itt_api_fini_ptr)
                    __itt_api_fini_ptr(&_N_(_ittapi_global));

                __itt_nullify_all_pointers();

 /* TODO: !!! not safe !!! don't support unload so far.
  *             if (_N_(_ittapi_global).lib != NULL)
  *                 __itt_unload_lib(_N_(_ittapi_global).lib);
  *             _N_(_ittapi_global).lib = NULL;
  */
                _N_(_ittapi_global).api_initialized = 0;
                current_thread = 0;
            }
        }
        __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
    }
}

ITT_EXTERN_C int _N_(init_ittlib)(const char* lib_name, __itt_group_id init_groups)
{
    register int i;
    __itt_group_id groups;
#ifdef ITT_COMPLETE_GROUP
    __itt_group_id zero_group = __itt_group_none;
#endif /* ITT_COMPLETE_GROUP */
    static volatile TIDT current_thread = 0;

    if (!_N_(_ittapi_global).api_initialized)
    {
#ifndef ITT_SIMPLE_INIT
        ITT_MUTEX_INIT_AND_LOCK(_N_(_ittapi_global));
#endif /* ITT_SIMPLE_INIT */

        if (!_N_(_ittapi_global).api_initialized)
        {
            if (current_thread == 0)
            {
                current_thread = __itt_thread_id();
                _N_(_ittapi_global).thread_list->tid = current_thread;
                if (lib_name == NULL)
                    lib_name = __itt_get_lib_name();
                groups = __itt_get_groups();
                if (groups != __itt_group_none || lib_name != NULL)
                {
                    _N_(_ittapi_global).lib = __itt_load_lib((lib_name == NULL) ? ittnotify_lib_name : lib_name);

                    if (_N_(_ittapi_global).lib != NULL)
                    {
                        __itt_api_init_t* __itt_api_init_ptr;
                        int lib_version = __itt_lib_version(_N_(_ittapi_global).lib);

                        switch (lib_version) {
                        case 0:
                            groups = __itt_group_legacy;
                        case 1:
                            /* Fill all pointers from dynamic library */
                            for (i = 0; _N_(_ittapi_global).api_list_ptr[i].name != NULL; i++)
                            {
                                if (_N_(_ittapi_global).api_list_ptr[i].group & groups & init_groups)
                                {
                                    *_N_(_ittapi_global).api_list_ptr[i].func_ptr = (void*)__itt_get_proc(_N_(_ittapi_global).lib, _N_(_ittapi_global).api_list_ptr[i].name);
                                    if (*_N_(_ittapi_global).api_list_ptr[i].func_ptr == NULL)
                                    {
                                        /* Restore pointers for function with static implementation */
                                        *_N_(_ittapi_global).api_list_ptr[i].func_ptr = _N_(_ittapi_global).api_list_ptr[i].null_func;
                                        __itt_report_error(__itt_error_no_symbol, lib_name, _N_(_ittapi_global).api_list_ptr[i].name);
#ifdef ITT_COMPLETE_GROUP
                                        zero_group = (__itt_group_id)(zero_group | _N_(_ittapi_global).api_list_ptr[i].group);
#endif /* ITT_COMPLETE_GROUP */
                                    }
                                }
                                else
                                    *_N_(_ittapi_global).api_list_ptr[i].func_ptr = _N_(_ittapi_global).api_list_ptr[i].null_func;
                            }

                            if (groups == __itt_group_legacy)
                            {
                                /* Compatibility with legacy tools */
                                ITTNOTIFY_NAME(thread_ignore)  = ITTNOTIFY_NAME(thr_ignore);
#if ITT_PLATFORM==ITT_PLATFORM_WIN
                                ITTNOTIFY_NAME(sync_createA)   = ITTNOTIFY_NAME(sync_set_nameA);
                                ITTNOTIFY_NAME(sync_createW)   = ITTNOTIFY_NAME(sync_set_nameW);
#else  /* ITT_PLATFORM!=ITT_PLATFORM_WIN */
                                ITTNOTIFY_NAME(sync_create)    = ITTNOTIFY_NAME(sync_set_name);
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
                                ITTNOTIFY_NAME(sync_prepare)   = ITTNOTIFY_NAME(notify_sync_prepare);
                                ITTNOTIFY_NAME(sync_cancel)    = ITTNOTIFY_NAME(notify_sync_cancel);
                                ITTNOTIFY_NAME(sync_acquired)  = ITTNOTIFY_NAME(notify_sync_acquired);
                                ITTNOTIFY_NAME(sync_releasing) = ITTNOTIFY_NAME(notify_sync_releasing);
                            }

#ifdef ITT_COMPLETE_GROUP
                            for (i = 0; _N_(_ittapi_global).api_list_ptr[i].name != NULL; i++)
                                if (_N_(_ittapi_global).api_list_ptr[i].group & zero_group)
                                    *_N_(_ittapi_global).api_list_ptr[i].func_ptr = _N_(_ittapi_global).api_list_ptr[i].null_func;
#endif /* ITT_COMPLETE_GROUP */
                            break;
                        case 2:
                            __itt_api_init_ptr = (__itt_api_init_t*)(size_t)__itt_get_proc(_N_(_ittapi_global).lib, "__itt_api_init");
                            if (__itt_api_init_ptr)
                                __itt_api_init_ptr(&_N_(_ittapi_global), init_groups);
                            break;
                        }
                    }
                    else
                    {
                        __itt_nullify_all_pointers();

                        __itt_report_error(__itt_error_no_module, lib_name,
#if ITT_PLATFORM==ITT_PLATFORM_WIN
                            __itt_system_error()
#else  /* ITT_PLATFORM==ITT_PLATFORM_WIN */
                            dlerror()
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
                        );
                    }
                }
                else
                {
                    __itt_nullify_all_pointers();
                }
                _N_(_ittapi_global).api_initialized = 1;
                current_thread = 0;
                /* !!! Just to avoid unused code elimination !!! */
                if (__itt_fini_ittlib_ptr == _N_(fini_ittlib)) current_thread = 0;
            }
        }

#ifndef ITT_SIMPLE_INIT
        __itt_mutex_unlock(&_N_(_ittapi_global).mutex);
#endif /* ITT_SIMPLE_INIT */
    }

    /* Evaluating if any function ptr is non empty and it's in init_groups */
    for (i = 0; _N_(_ittapi_global).api_list_ptr[i].name != NULL; i++)
        if (*_N_(_ittapi_global).api_list_ptr[i].func_ptr != _N_(_ittapi_global).api_list_ptr[i].null_func &&
            _N_(_ittapi_global).api_list_ptr[i].group & init_groups)
            return 1;
    return 0;
}

ITT_EXTERN_C __itt_error_handler_t* _N_(set_error_handler)(__itt_error_handler_t* handler)
{
    __itt_error_handler_t* prev = (__itt_error_handler_t*)(size_t)_N_(_ittapi_global).error_handler;
    _N_(_ittapi_global).error_handler = (void*)(size_t)handler;
    return prev;
}

#if ITT_PLATFORM==ITT_PLATFORM_WIN
#pragma warning(pop)
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */