gperftools cpp wrapper
gperftools cpp wrapper
// Compile command : ${CXX} -o test_profiler.elf -DUSE_GPERFTOOLS -DDEBUG -D_DEBUG ${CXXFLAGS} -O0 -g -Wall ${LIBS} -lprofiler ${BUILD_LDFLAGS} test_profiler.cpp
// Bash Command : kill -s SIGUSR1 <PID>
// CPU Profiler command : gperftools/bin/pprof -text test_profiler.elf test_profiler.prof
// see https://github.com/gperftools/gperftools/wiki
Source filename: test_profiler.cpp
/* Start of test_profiler.cpp */ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Start of config_arch.h #include <climits> /* Whether or not the compiler supports long long and unsigned long long
*/
#ifndef HAS_LONG_LONG
#if __cplusplus >= 201103L
#define HAS_LONG_LONG
#else
#ifdef __GNUG__
#ifdef __SIZEOF_LONG_LONG__
#define HAS_LONG_LONG
#endif
#endif
#endif
#endif /* The character type that char matches (i.e., signed or unsigned)
*/
#if CHAR_MIN < 0
typedef signed char underlying_char_type;
#else
typedef unsigned char underlying_char_type;
#endif // End of config_arch.h
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Start of config_os.h // =============================================================================
// Determine the platform. Ex., Windows or POSIX. Define feature macros #if ( defined( __unix__ ) || defined( __unix ) || ( defined( __APPLE__ ) && defined( __MACH__ ) ) )
#include <unistd.h> #ifdef _POSIX_VERSION
// ISO POSIX.1 aka IEEE 1003.1 /// OS_POSIX - unistd.h is included and _POSIX_VERSION is defined
#define OS_POSIX #if _POSIX_VERSION >= 199506L
// ISO POSIX.1-1996 aka IEEE 1003.1-1996
#define POSIX_THREADS #if ( _POSIX_VERSION >= 200112L )
// ISO POSIX.1-2001 aka IEEE 1003.1-2001, aka Issue 6, aka SUSv3
#define POSIX_ISSUE_6 #if ( _POSIX_VERSION >= 200809L )
// ISO POSIX.1-2008, aka IEEE 1003.1-2008, aka Issue 7, aka SUSv4
#define POSIX_ISSUE_7
#endif //
#endif //
#endif //
#endif // ifdef _POSIX_VERSION
#endif // if ( defined( __unix__ ) || defined( __unix ) || ( defined( __APPLE__ ) && defined( __MACH__ ))) #if defined( _WIN64 ) || defined( _WIN32 )
#include <windows.h> /* MS Windows operating systems */
#define OS_WINDOWS
#endif // =============================================================================
// Determine basic types #ifdef OS_POSIX
#include <sys/types.h>
namespace stdbp
{
namespace os
{
// Identifies a user
typedef uid_t user_id_type; // Identifies a process
typedef pid_t pid_type;
}
}
#else
#ifdef OS_WINDOWS
namespace stdbp
{
namespace os
{
typedef DWORD pid_type;
}
}
#endif // Windows
#endif // ifdef OS_POSIX // =============================================================================
// Determine multithreading types #ifdef POSIX_THREADS
#include <pthread.h>
namespace stdbp
{
namespace os
{
typedef pthread_t thread_type;
typedef pthread_mutex_t mutex_type;
typedef pthread_rwlock_t shared_mutex_type;
typedef pthread_cond_t condition_variable_type;
}
}
#else
#ifdef OS_WINDOWS
namespace stdbp
{
namespace os
{
typedef HANDLE thread_type;
typedef CRITICAL_SECTION mutex_type;
}
}
#endif
#endif // ifdef POSIX_THREADS // End of config_os.h
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Start of version.h #include <cstddef> #if __cplusplus >= 201703L
#define CPP17
#endif
#if __cplusplus >= 201402L
#define CPP14
#endif
#if __cplusplus >= 201103L
#define CPP11
#endif #ifdef CPP17
#define CPP17_NAMESPACE std
#else
#define CPP17_NAMESPACE cpp17
#endif #ifdef CPP14
#define CPP14_NAMESPACE std
#else
#define CPP14_NAMESPACE cpp14
#endif #ifdef CPP11
#define CPP11_NAMESPACE std
#else
#define CPP11_NAMESPACE cpp11
#endif namespace cpp11 {} #ifndef CPP11
namespace cpp11 { class nullptr_t {
public:
nullptr_t() : _pad() {} template< class T >
operator T *() const { // 定义类型转换操作符，使nullptr_t 可转为任意非类成员指针类型。
return ;
} template< class C, class T >
operator T C::*() const { // 重载类型转换操作符，使 nullptr_t 可以转换为类 C 中任意的指针类型（数据成员指针/函数成员指针）。
return ;
}
private:
void *_pad; // std requires : sizeof(nullptr_t) == sizeof(void*)
void operator &() const; // 不允许取地址操作。
}; const nullptr_t nullptr; // 定义 nullptr_t 类型的变量 nullptr } // namespace cpp11 #endif // #ifndef CPP11 namespace cpp14 {}
namespace cpp17 {} namespace cpp {
using namespace ::std;
using namespace ::CPP11_NAMESPACE;
using namespace ::CPP14_NAMESPACE;
using namespace ::CPP17_NAMESPACE;
} // namespace cpp // End of version.h
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Start of cstdint.h #include <string>
//#include "version.h" #ifdef CPP11
// Provided by C++11
#include <cstdint>
#else #include <climits> // Steal some types from the implementation, if we can
#if !defined( _WIN32 ) && ( defined( __unix__ ) || defined( __unix ) || ( defined( __APPLE__ ) && defined( __MACH__ )))
#include <unistd.h>
#if ( _POSIX_C_SOURCE >= 200112L )
// Provided by POSIX
#include <stdint.h> namespace cpp11 {
using ::intptr_t;
using ::uintptr_t;
}
#endif // POSIX
#endif // UNIX-LIKE namespace cpp11 {
#define AT_LEAST_16_BITS_S(x) ((x) >= 32767)
#define AT_LEAST_32_BITS_S(x) ((x) >= 2147483647)
#define AT_LEAST_64_BITS_S(x) ((((((x) >> 15) >> 15) >> 15) >> 15) >= 7)
#define AT_LEAST_16_BITS_U(x) ((x) >= 65535)
#define AT_LEAST_32_BITS_U(x) (((x) >> 1) >= 2147483647)
#define AT_LEAST_64_BITS_U(x) ((((((x) >> 15) >> 15) >> 15) >> 15) >= 15) #define EXACTLY_8_BITS_S(x) ((x) == 127)
#define EXACTLY_16_BITS_S(x) ((x) == 32767)
#define EXACTLY_32_BITS_S(x) ((x) == 2147483647)
#define EXACTLY_64_BITS_S(x) ((((((x) >> 15) >> 15) >> 15) >> 15) == 7)
#define EXACTLY_8_BITS_U(x) ((x) == 255)
#define EXACTLY_16_BITS_U(x) ((x) == 65535)
#define EXACTLY_32_BITS_U(x) (((x) >> 1) == 2147483647)
#define EXACTLY_64_BITS_U(x) ((((((x) >> 15) >> 15) >> 15) >> 15) == 15) // int_least8_t
typedef signed char int_least8_t;
#ifndef INT8_C
#define INT8_C(x) x
#endif
#ifndef INT_LEAST8_MIN
#define INT_LEAST8_MIN SCHAR_MIN
#endif
#ifndef INT_LEAST8_MAX
#define INT_LEAST8_MAX SCHAR_MAX
#endif // int8_t
#if EXACTLY_8_BITS_S(INT_LEAST8_MAX)
#ifndef INT8_MIN
#define INT8_MIN INT_LEAST8_MIN
#endif
#ifndef INT8_MAX
#define INT8_MAX INT_LEAST8_MAX
#endif
typedef int_least8_t int8_t;
#endif // int_least16_t
#if AT_LEAST_16_BITS_S(SCHAR_MAX)
typedef signed char int_least16_t;
#ifndef INT_LEAST16_MIN
#define INT_LEAST16_MIN SCHAR_MIN
#endif
#ifndef INT_LEAST16_MAX
#define INT_LEAST16_MAX SCHAR_MAX
#endif
#else
typedef short int int_least16_t;
#ifndef INT_LEAST16_MIN
#define INT_LEAST16_MIN SHRT_MIN
#endif
#ifndef INT_LEAST16_MAX
#define INT_LEAST16_MAX SHRT_MAX
#endif
#endif
#ifndef INT16_C
#define INT16_C(x) x
#endif // int16_t
#if EXACTLY_16_BITS_S(INT_LEAST8_MAX)
#ifndef INT16_MIN
#define INT16_MIN INT_LEAST16_MIN
#endif
#ifndef INT16_MAX
#define INT16_MAX INT_LEAST16_MAX
#endif
typedef int_least16_t int16_t;
#endif // int_least32_t
#if AT_LEAST_32_BITS_S(SCHAR_MAX)
typedef signed char int_least32_t
#ifndef INT_LEAST32_MIN
#define INT_LEAST32_MIN SCHAR_MIN
#endif
#ifndef INT_LEAST32_MAX
#define INT_LEAST32_MAX SCHAR_MAX
#endif
#ifndef INT32_C
#define INT32_C(x) x
#endif
#elif AT_LEAST_32_BITS_S(SHRT_MAX)
typedef short int int_least32_t
#ifndef INT_LEAST32_MIN
#define INT_LEAST32_MIN SHRT_MIN
#endif
#ifndef INT_LEAST32_MAX
#define INT_LEAST32_MAX SHRT_MAX
#endif
#ifndef INT32_C
#define INT32_C(x) x
#endif
#elif AT_LEAST_32_BITS_S(INT_MAX)
typedef int int_least32_t;
#ifndef INT_LEAST32_MIN
#define INT_LEAST32_MIN INT_MIN
#endif
#ifndef INT_LEAST32_MAX
#define INT_LEAST32_MAX INT_MAX
#endif
#ifndef INT32_C
#define INT32_C(x) x
#endif
#else
typedef long int_least32_t;
#ifndef INT_LEAST32_MIN
#define INT_LEAST32_MIN LONG_MIN
#endif
#ifndef INT_LEAST32_MAX
#define INT_LEAST32_MAX LONG_MAX
#endif
#ifndef INT32_C
#define INT32_C(x) x##l
#endif
#endif // if AT_LEAST_32_BITS_S(SCHAR_MAX) // int32_t
#if EXACTLY_32_BITS_S(INT_LEAST32_MAX)
#ifndef INT32_MIN
#define INT32_MIN INT_LEAST32_MIN
#endif
#ifndef INT32_MAX
#define INT32_MAX INT_LEAST32_MAX
#endif
typedef int_least32_t int32_t;
#endif // int_least64_t
#if AT_LEAST_64_BITS_S(SCHAR_MAX)
typedef signed char int_least64_t
#ifndef INT_LEAST64_MIN
#define INT_LEAST64_MIN SCHAR_MIN
#endif
#ifndef INT_LEAST64_MAX
#define INT_LEAST64_MAX SCHAR_MAX
#endif
#ifndef INT64_C
#define INT64_C(x) x
#endif
#elif AT_LEAST_64_BITS_S(SHRT_MAX)
typedef short int_least64_t
#ifndef INT_LEAST64_MIN
#define INT_LEAST64_MIN SHRT_MIN
#endif
#ifndef INT_LEAST64_MAX
#define INT_LEAST64_MAX SHRT_MAX
#endif
#ifndef INT64_C
#define INT64_C(x) x
#endif
#elif AT_LEAST_64_BITS_S(INT_MAX)
typedef int int_least64_t;
#ifndef INT_LEAST64_MIN
#define INT_LEAST64_MIN INT_MIN
#endif
#ifndef INT_LEAST64_MAX
#define INT_LEAST64_MAX INT_MAX
#endif
#ifndef INT64_C
#define INT64_C(x) x
#endif
#elif AT_LEAST_64_BITS_S(LONG_MAX)
typedef long int_least64_t;
#ifndef INT_LEAST64_MIN
#define INT_LEAST64_MIN LONG_MIN
#endif
#ifndef INT_LEAST64_MAX
#define INT_LEAST64_MAX LONG_MAX
#endif
#ifndef INT64_C
#define INT64_C(x) x##l
#endif
#else
#ifdef LLONG_MAX
typedef long long int_least64_t;
#ifndef INT_LEAST64_MIN
#define INT_LEAST64_MIN LLONG_MIN
#endif
#ifndef INT_LEAST64_MAX
#define INT_LEAST64_MAX LLONG_MAX
#endif
#ifndef INT64_C
#define INT64_C(x) x##ll
#endif
#endif
#endif // if AT_LEAST_64_BITS_S(SCHAR_MAX) // int64_t
#if EXACTLY_64_BITS_S(INT_LEAST64_MAX)
#ifndef INT64_MIN
#define INT64_MIN INT_LEAST64_MIN
#endif
#ifndef INT64_MAX
#define INT64_MAX INT_LEAST64_MAX
#endif
typedef int_least64_t int64_t;
#endif // uint_least8_t
typedef unsigned char uint_least8_t;
#ifndef UINT8_C
#define UINT8_C(x) x
#endif
#ifndef UINT_LEAST8_MAX
#define UINT_LEAST8_MAX UCHAR_MAX
#endif // uint8_t
#if EXACTLY_8_BITS_U(UINT_LEAST8_MAX)
#ifndef UINT8_MAX
#define UINT8_MAX UINT_LEAST8_MAX
#endif
typedef uint_least8_t uint8_t;
#endif // uint_least16_t
#if AT_LEAST_16_BITS_U(UCHAR_MAX)
typedef unsigned char uint_least16_t;
#ifndef UINT_LEAST16_MAX
#define UINT_LEAST16_MAX UCHAR_MAX
#endif
#else
typedef unsigned short uint_least16_t;
#ifndef UINT_LEAST16_MAX
#define UINT_LEAST16_MAX USHRT_MAX
#endif
#endif
#ifndef UINT16_C
#define UINT16_C(x) x
#endif // uint16_t
#if EXACTLY_16_BITS_U(UINT_LEAST16_MAX)
#ifndef UINT16_MAX
#define UINT16_MAX UINT_LEAST16_MAX
#endif
typedef uint_least16_t uint16_t;
#endif // uint_least32_t
#if AT_LEAST_32_BITS_U(UCHAR_MAX)
typedef unsigned char uint_least32_t
#ifndef UINT_LEAST32_MAX
#define UINT_LEAST32_MAX UCHAR_MAX
#endif
#ifndef UINT32_C
#define UINT32_C(x) x
#endif
#elif AT_LEAST_32_BITS_U(USHRT_MAX)
typedef unsigned short uint_least32_t
#ifndef UINT_LEAST32_MAX
#define UINT_LEAST32_MAX USHRT_MAX
#endif
#ifndef UINT32_C
#define UINT32_C(x) x
#endif
#elif AT_LEAST_32_BITS_U(UINT_MAX)
typedef unsigned uint_least32_t;
#ifndef UINT_LEAST32_MAX
#define UINT_LEAST32_MAX UINT_MAX
#endif
#ifndef UINT32_C
#define UINT32_C(x) x
#endif
#else
typedef unsigned long uint_least32_t;
#ifndef UINT_LEAST32_MAX
#define UINT_LEAST32_MAX ULONG_MAX
#endif
#ifndef UINT32_C
#define UINT32_C(x) x##ul
#endif
#endif // if AT_LEAST_32_BITS_U(UCHAR_MAX) // uint32_t
#if EXACTLY_32_BITS_U(UINT_LEAST32_MAX)
#ifndef UINT32_MAX
#define UINT32_MAX UINT_LEAST32_MAX
#endif
typedef uint_least32_t uint32_t;
#endif // uint_least64_t
#if AT_LEAST_64_BITS_U(UCHAR_MAX)
typedef unsigned char uint_least64_t
#ifndef UINT64_C
#define UINT64_C(x) x
#endif
#ifndef UINT_LEAST64_MAX
#define UINT_LEAST64_MAX UCHAR_MAX
#endif
#elif AT_LEAST_64_BITS_U(USHRT_MAX)
typedef unsigned short uint_least64_t
#ifndef UINT64_C
#define UINT64_C(x) x
#endif
#ifndef UINT_LEAST64_MAX
#define UINT_LEAST64_MAX USHRT_MAX
#endif
#elif AT_LEAST_64_BITS_U(UINT_MAX)
typedef unsigned uint_least64_t;
#ifndef UINT64_C
#define UINT64_C(x) x
#endif
#ifndef UINT_LEAST64_MAX
#define UINT_LEAST64_MAX UINT_MAX
#endif
#elif AT_LEAST_64_BITS_U(LONG_MAX)
typedef unsigned long uint_least64_t;
#ifndef UINT64_C
#define UINT64_C(x) x##ul
#endif
#ifndef UINT_LEAST64_MAX
#define UINT_LEAST64_MAX ULONG_MAX
#endif
#else
#ifdef ULLONG_MAX
typedef unsigned long long uint_least64_t;
#ifndef UINT64_C
#define UINT64_C(x) x##ull
#endif
#ifndef UINT_LEAST64_MAX
#define UINT_LEAST64_MAX ULLONG_MAX
#endif
#endif
#endif // if AT_LEAST_64_BITS_U(UCHAR_MAX) // uint64_t
#if EXACTLY_64_BITS_U(UINT_LEAST64_MAX)
#ifndef UINT64_MAX
#define UINT64_MAX UINT_LEAST64_MAX
#endif
typedef uint_least64_t uint64_t;
#endif typedef signed char int_fast8_t;
typedef int int_fast16_t;
typedef long int_fast32_t;
typedef int_least64_t int_fast64_t; typedef unsigned char uint_fast8_t;
typedef unsigned uint_fast16_t;
typedef unsigned long uint_fast32_t;
typedef uint_least64_t uint_fast64_t; #ifdef LLONG_MAX
typedef long long intmax_t;
#ifndef INTMAX_C
#define INTMAX_C(x) x##ll
#endif
#ifndef INTMAX_MAX
#define INTMAX_MAX LLONG_MAX
#endif
#else
typedef long intmax_t;
#ifndef INTMAX_C
#define INTMAX_C(x) x##l
#endif
#ifndef INTMAX_MAX
#define INTMAX_MAX LONG_MAX
#endif
#endif #ifdef ULLONG_MAX
typedef unsigned long long uintmax_t;
#ifndef UINTMAX_C
#define UINTMAX_C(x) x##ull
#endif
#ifndef UINTMAX_MAX
#define UINTMAX_MAX ULLONG_MAX
#endif
#else
typedef unsigned long uintmax_t;
#ifndef UINTMAX_C
#define UINTMAX_C(x) x##ul
#endif
#ifndef UINTMAX_MAX
#define UINTMAX_MAX ULONG_MAX
#endif
#endif #undef EXACTLY_8_BITS_S
#undef EXACTLY_16_BITS_S
#undef EXACTLY_32_BITS_S
#undef EXACTLY_64_BITS_S
#undef EXACTLY_8_BITS_U
#undef EXACTLY_16_BITS_U
#undef EXACTLY_32_BITS_U
#undef EXACTLY_64_BITS_U #undef AT_LEAST_16_BITS_S
#undef AT_LEAST_32_BITS_S
#undef AT_LEAST_64_BITS_S
#undef AT_LEAST_16_BITS_U
#undef AT_LEAST_32_BITS_U
#undef AT_LEAST_64_BITS_U
} // namespace cpp11 #endif // #ifdef CPP11 // End of cstdint.h
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Start of string.h #include <string>
//#include "version.h" #ifndef CPP11
#include <cstdlib>
#include <iostream>
#include <sstream>
//#include "config_arch.h"
namespace cpp11 {
namespace detail {
template< typename I >
std::string arithmetic_to_string(I x) {
std::ostringstream ss;
ss << x;
return ss.str();
} template< typename I >
std::wstring arithmetic_to_wstring(I x) {
std::wostringstream ss;
ss << x;
return ss.str();
}
} // namespace detail inline unsigned long stoul(
const std::string &s,
std::size_t *pos = ,
int base = ) {
char *ptr;
const char *s_ = s.c_str();
const long res = std::strtoul(s_, &ptr, base);
if (pos) {
*pos = ptr - s_;
}
return res;
} /// @todo Should throw if not convertible, or result is too large
inline long stol(
const std::string &s,
std::size_t *pos = ,
int base = ) {
char * ptr;
const char *s_ = s.c_str();
const long res = std::strtol(s_, &ptr, base);
if (pos) {
*pos = ptr - s_;
}
return res;
} /// @todo Should throw if not convertible, or result is too large
inline int stoi(
const std::string &s,
std::size_t *pos = ,
int base = ) {
return static_cast< int >(stol(s, pos, base));
} /** @brief Get the string representation of an int
* @param n An integer
* @returns lexical_cast<std::string>(n)
*/
inline std::string to_string(int n) {
return detail::arithmetic_to_string(n);
} inline std::string to_string(long n) {
return detail::arithmetic_to_string(n);
} inline std::string to_string(unsigned n) {
return detail::arithmetic_to_string(n);
} inline std::string to_string(unsigned long n) {
return detail::arithmetic_to_string(n);
} #ifdef HAS_LONG_LONG
inline std::string to_string(long long n) {
return detail::arithmetic_to_string(n);
} inline std::string to_string(unsigned long long n) {
return detail::arithmetic_to_string(n);
}
#endif // #ifdef HAS_LONG_LONG inline std::string to_string(float n) {
return detail::arithmetic_to_string(n);
} inline std::string to_string(double n) {
return detail::arithmetic_to_string(n);
} inline std::string to_string(long double n) {
return detail::arithmetic_to_string(n);
} inline std::wstring to_wstring(int n) {
return detail::arithmetic_to_wstring(n);
} inline std::wstring to_wstring(unsigned n) {
return detail::arithmetic_to_wstring(n);
} inline std::wstring to_wstring(long n) {
return detail::arithmetic_to_wstring(n);
} inline std::wstring to_wstring(unsigned long n) {
return detail::arithmetic_to_wstring(n);
} #ifdef HAS_LONG_LONG
inline std::wstring to_wstring(long long n) {
return detail::arithmetic_to_wstring(n);
} inline std::wstring to_wstring(unsigned long long n) {
return detail::arithmetic_to_wstring(n);
}
#endif // #ifdef HAS_LONG_LONG inline std::wstring to_wstring(float n) {
return detail::arithmetic_to_wstring(n);
} inline std::wstring to_wstring(double n) {
return detail::arithmetic_to_wstring(n);
} inline std::wstring to_wstring(long double n) {
return detail::arithmetic_to_wstring(n);
} } // namespace cpp11
#endif // #ifndef CPP11 // End of string.h
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< //#include "version.h"
//#include "config_arch.h"
//#include "config_os.h"
//#include "cstdint.h"
//#include "string.h.h" #include <cstdio>
#include <cstdlib>
#include <cerrno>
#include <csignal>
#include <ctime>
#include <cstring>
#include <sstream> namespace lse_ns_util { namespace common { char *GetFilename(const char *fullname) {
char *name = cpp::nullptr;
#if ( defined( __unix__ ) || defined( __unix ) || ( defined( __APPLE__ ) && defined( __MACH__ ) ) )
const char splitchar = '/';
#elif defined( _WIN64 ) || defined( _WIN32 )
const char splitchar = '\\';
#else
const char splitchar = '\ ';
#endif
if (fullname == cpp::nullptr || *fullname == '\0') {
return cpp::nullptr;
} for (char *ptr = (char *)fullname; *ptr != '\0'; ptr++) {
if (*ptr == splitchar && *(ptr + ) != '\0') {
name = ptr;
}
} // eg: fullname == "/"
if (name == cpp::nullptr && *fullname == splitchar) {
return cpp::nullptr;
}
// eg: fullname == "xxx.elf/"
if (name == cpp::nullptr && (*(fullname + strlen(fullname) - ) == splitchar) ) {
return cpp::nullptr;
}
// eg: fullname == "/yyy/xxx.elf/"
if (name != cpp::nullptr && (*(fullname + strlen(fullname) - ) == splitchar)) {
return cpp::nullptr;
}
// eg: fullname == "xxx.elf"
if (name == cpp::nullptr && *fullname != splitchar) {
return (char *)fullname;
}
// eg: fullname == "/xxx.elf"
if ((name != cpp::nullptr && name == fullname)) {
return (name + );
}
// eg: fullname == "/yyy/xxx.elf"
if (name != cpp::nullptr && name != fullname) {
return (name + );
} return cpp::nullptr;
} size_t GetPathname(const char *fullname, char *pathname, const size_t pathszie) {
char *name = cpp::nullptr;
#if ( defined( __unix__ ) || defined( __unix ) || ( defined( __APPLE__ ) && defined( __MACH__ ) ) )
const char splitchar = '/';
const char *splitstr = "/";
#elif defined( _WIN64 ) || defined( _WIN32 )
const char splitchar = '\\';
const char *splitstr = "\\";
#else
const char splitchar = '\ ';
const char *splitstr = "\ ";
#endif
if (fullname == cpp::nullptr || *fullname == '\0' || pathname == cpp::nullptr || pathszie < ) {
return ;
} for (char *ptr = (char *)fullname; *ptr != '\0'; ptr++) {
if (*ptr == splitchar && *(ptr + ) != '\0') {
name = ptr;
}
} // eg: fullname == "/"
if (name == cpp::nullptr && *fullname == splitchar) {
strncpy(pathname, splitstr, strlen(splitstr));
return strlen(pathname);
}
// eg: fullname == "xxx.elf/"
if (name == cpp::nullptr && (*(fullname + strlen(fullname) - ) == splitchar)) {
strncpy(pathname, ".", strlen("."));
return strlen(pathname);
}
// eg: fullname == "/yyy/xxx.elf/"
if (name != cpp::nullptr && (*(fullname + strlen(fullname) - ) == splitchar)) {
if (pathszie > (size_t)(name - fullname)) {
strncpy(pathname, fullname, (size_t)(name - fullname));
return strlen(pathname);
}
else {
return ;
}
}
// eg: fullname == "xxx.elf"
if (name == cpp::nullptr && *fullname != splitchar) {
strncpy(pathname, ".", strlen("."));
return strlen(pathname);
}
// eg: fullname == "/xxx.elf"
if ((name != cpp::nullptr && name == fullname)) {
strncpy(pathname, splitstr, strlen(splitstr));
return strlen(pathname);
}
// eg: fullname == "/yyy/xxx.elf"
if (name != cpp::nullptr && name != fullname) {
if (pathszie > (size_t)(name - fullname)) {
strncpy(pathname, fullname, (size_t)(name - fullname));
return strlen(pathname);
}
else {
return ;
}
} return ;
} size_t DelLastSuffix(const char *filename, const char splitchar, char *newname, const size_t newszie) {
char *name = cpp::nullptr;
const char splitstr[] = { splitchar, '\0' }; if (filename == cpp::nullptr || *filename == '\0' || newname == cpp::nullptr || newszie < ) {
return ;
} for (char *ptr = (char *)filename; *ptr != '\0'; ptr++)
{
if (*ptr == splitchar && *(ptr + ) != '\0') {
name = ptr;
}
} // eg: filename == "."
if (name == cpp::nullptr && *filename == splitchar) {
strncpy(newname, splitstr, strlen(splitstr));
return strlen(newname);
}
// eg; filename == "xxx."
if (name == cpp::nullptr && (*(filename + strlen(filename) - ) == splitchar)) {
if (newszie > strlen(filename) - ) {
strncpy(newname, filename, strlen(filename) - );
return strlen(newname);
}
else {
return ;
}
}
// eg; filename == "yyy.xxx."
if (name != cpp::nullptr && (*(filename + strlen(filename) - ) == splitchar)) {
if (newszie > (size_t)(name - filename)) {
strncpy(newname, filename, (size_t)(name - filename));
return strlen(newname);
}
else {
return ;
}
}
// eg: filename == "xxx"
if (name == cpp::nullptr && *filename != splitchar) {
if (newszie > strlen(filename)) {
strncpy(newname, filename, strlen(filename));
return strlen(newname);
}
else {
return ;
}
}
// eg: filename == ".xxx"
if ((name != cpp::nullptr && name == filename)) {
strncpy(newname, splitstr, strlen(splitstr));
return strlen(newname);
}
// eg: filename == "xxx.yyy.zzz"
if (name != cpp::nullptr && name != filename) {
if (newszie > (size_t)(name - filename)) {
strncpy(newname, filename, (size_t)(name - filename));
return strlen(newname);
}
else {
return ;
}
} return ;
} int setupSignal(int signum, void(*handler) (int)) {
const size_t MAX_BUF_LEN = ;
char strbuf[MAX_BUF_LEN] = {'\0'};
struct sigaction s_sigAction;
s_sigAction.sa_handler = handler;
s_sigAction.sa_flags = ;
sigemptyset(&s_sigAction.sa_mask);
sigaddset(&s_sigAction.sa_mask, signum);
if (sigaction(signum, &s_sigAction, cpp::nullptr) < ) {
strerror_r(errno, strbuf, MAX_BUF_LEN);
fprintf(stderr, "error: %d - %s", errno, strbuf);
return errno;
}
else {
return ;
}
} std::string TimeToTimestampStr(time_t t) {
tm dTm;
tm* aTm = localtime_r(&t, &dTm);
const size_t MAX_BUF_LEN = ;
char strbuf[MAX_BUF_LEN] = { '\0' };
// YYYY year
// MM month (2 digits 01-12)
// DD day (2 digits 01-31)
// HH hour (2 digits 00-23)
// MM minutes (2 digits 00-59)
// SS seconds (2 digits 00-59)
snprintf(strbuf, MAX_BUF_LEN, "%04d-%02d-%02d_%02d:%02d:%02d", aTm->tm_year + , aTm->tm_mon + , aTm->tm_mday, aTm->tm_hour, aTm->tm_min, aTm->tm_sec);
return std::string(strbuf);
} uint32_t CreatePIDFile(std::string filename) {
FILE * pid_file = fopen(filename.c_str(), "w");
if (pid_file == cpp::nullptr) {
return ;
} #ifdef WIN32
DWORD pid = GetCurrentProcessId();
#else
pid_t pid = getpid();
#endif fprintf(pid_file, "%d", pid);
fclose(pid_file); return (uint32_t)pid;
} } namespace prof { #if (defined(__linux__) || defined(__FreeBSD__)) && defined(USE_GPERFTOOLS)
#include <gperftools/profiler.h>
#endif class Profiler {
public:
static Profiler *getInstance() {
return instance;
} static Profiler *FreeInstance() {
if (instance != cpp::nullptr) {
delete instance;
instance = cpp::nullptr;
}
return instance;
} bool IsRunning() const {
#if (defined(__linux__) || defined(__FreeBSD__)) && defined(USE_GPERFTOOLS)
ProfilerState state;
ProfilerGetCurrentState(&state);
return state.enabled;
#else
return false;
#endif
} void Flush() {
#if (defined(__linux__) || defined(__FreeBSD__)) && defined(USE_GPERFTOOLS)
ProfilerFlush();
#endif
} void RegisterThread() {
#if (defined(__linux__) || defined(__FreeBSD__)) && defined(USE_GPERFTOOLS)
ProfilerRegisterThread();
#endif
} bool Start(std::string filename, std::string &failureReason) {
#if (defined(__linux__) || defined(__FreeBSD__)) && defined(USE_GPERFTOOLS)
if (IsRunning()) {
failureReason = "Already running";
return false;
} if (ProfilerStart(filename.c_str()) == ) {
failureReason = "ProfilerStart returned an error";
return false;
} return true;
#else
failureReason = "Not compiled with gperftools";
return false;
#endif
}
bool Stop(std::string &failureReason) {
#if (defined(__linux__) || defined(__FreeBSD__)) && defined(USE_GPERFTOOLS)
if (!IsRunning()) {
failureReason = "Not running";
return false;
}
ProfilerStop();
return true;
#else
failureReason = "Not compiled with gperftools";
return false;
#endif
} std::string GetInfos() const {
#if (defined(__linux__) || defined(__FreeBSD__)) && defined(USE_GPERFTOOLS)
bool enabledForAllThreads = ProfilingIsEnabledForAllThreads();
ProfilerState state;
ProfilerGetCurrentState(&state); std::stringstream infos;
infos.str("");
infos.clear(); infos << "Profiling is " << std::endl;
infos << "- " << (state.enabled ? "enabled" : "disabled") << std::endl;
if (!IsRunning()) {
return infos.str();
} infos << "- " << (enabledForAllThreads ? "" : "not ") << "enabled for all threads" << std::endl;
infos << "- Started at timestamp(" << cpp::to_string(state.start_time) << ") / localtime(" << ::lse_ns_util::common::TimeToTimestampStr(state.start_time) << ")" << std::endl;
infos << "- Writing to filename(" << state.profile_name << ")" << std::endl;
infos << "- Has currently gathered " << cpp::to_string(state.samples_gathered) << " samples" << std::endl;
return infos.str();
#else
return "Not compiled with gperftools";
#endif
} private:
static Profiler *instance; // 声明的静态成员变量 instance
Profiler() {}
};
// 定义 Profiler 类的静态成员变量 instance
Profiler *Profiler::instance = new Profiler(); } // namespace prof namespace util {
using namespace ::lse_ns_util::common;
using namespace ::lse_ns_util::prof;
} } // namespace lse_ns_util #include <csignal>
#include <iostream> void profilerSignalHandler(int signum) {
static bool isRunning = false; if (signum != SIGUSR1) {
return;
} const char *profilerDefaultname = "test";
const char *profilerSuffix = ".prof";
const size_t MAX_FILENAME_LEN = ;
char profilerFilename[MAX_FILENAME_LEN] = { '\0' };
std::string strTemp;
std::string strFilename; strFilename.erase();
strFilename.clear();
if (lse_ns_util::util::DelLastSuffix(lse_ns_util::util::GetFilename(__FILE__), '.', profilerFilename, MAX_FILENAME_LEN) != ) {
strFilename.append(profilerFilename).append(profilerSuffix);
}
else {
strFilename.append(profilerDefaultname).append(profilerSuffix);
} strTemp.erase();
strTemp.clear();
lse_ns_util::util::Profiler * profiler = lse_ns_util::util::Profiler::getInstance();
isRunning = profiler->IsRunning();
if (!isRunning) {
profiler->Start(strFilename, strTemp);
isRunning = profiler->IsRunning();
if (isRunning) {
std::cout << profiler->GetInfos() << std::endl;
std::cout << "Notice: Profiler Start successfully." << std::endl;
}
else {
std::cout << "Notice: Profiler Start failed." << std::endl;
}
}
else {
profiler->Stop(strTemp);
isRunning = profiler->IsRunning();
if (!isRunning) {
lse_ns_util::util::Profiler::FreeInstance();
std::cout << "Notice: Profiler Stop successfully." << std::endl;
}
else {
std::cout << "Notice: Profiler Stop failed." << std::endl;
}
}
} void loopop() {
int n = ;
while () {
for (int i = ; i < ; i++) {
for (int j = ; j < ; j++) {
n |= i % + j / ;
}
}
std::cout << lse_ns_util::common::TimeToTimestampStr(time(cpp::nullptr)) << " - result: " << n << std::endl;
}
return;
} // Compile command : ${CXX} -o test_profiler.elf -DUSE_GPERFTOOLS -DDEBUG -D_DEBUG ${CXXFLAGS} -O0 -g -Wall ${LIBS} -lprofiler ${BUILD_LDFLAGS} test_profiler.cpp
// Bash Command : kill -s SIGUSR1 <PID>
// CPU Profiler command : gperftools/bin/pprof -text test_profiler.elf test_profiler.prof
// see https://github.com/gperftools/gperftools/wiki int main(int argc, char *argv[]) { if (lse_ns_util::util::setupSignal(SIGUSR1, profilerSignalHandler) != ) {
return -;
}
else {
loopop();
return ;
} } /* End of test_profiler.cpp */
==================== End
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