ePenguin-Software-Framework/tools/build-timer/btime.c

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/* ===================================================================
   
   $

   aetime works under the same premise as Casey Muratori's ctime under
   the public domain. It's a small utility that allows you to time how 
   long your machine spends building your project. It works in the same 
   manner as a begin/end block in your typical profiler.

   $ WARNING
   ---------

   This software is provided UNDER AN "AS IS" BASIS. The author makes NO
   WARRENTY to the RELIABILITY of this software. Take this message as your
   only warning, USE AT YOUR OWN RISK. This shit could even format your
   entire disk! Not my fault though.

   INSTRUCTIONS
   ------------

   On the first line of your build script, write
        aetime --begin <project-name>.aet
   then on the last line, write
        aetime --end <project-name>.aet
   and the program will output how many seconds it took to build your project!

   Also if you must debug the project, you can append a '-v' flag to the end
   of the argument list for additional debug output into the console.

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

#include <stdint.h>
#include <stdio.h>
#include <stdbool.h>

#define global static
#define u8 uint8_t
#define u32 uint32_t
#define f32 float
#define uint u32

#define GenerateMagic(a, b, c, d) (((u32)(a) << 0) | ((u32)(b) << 8) | ((u32)(c) << 16) | ((u32)(d) << 24))

#pragma pack(push, 1)
#define AET_MAGIC_VALUE GenerateMagic('a', 'e', 't', 'c')
typedef struct timer_file_header {
    u32 Magic;
} timer_file_header;

typedef struct timer_file_entry {
    f32 Elapsed;
} timer_file_entry;

typedef struct timer_entry_array {
    u32 EntryCount;
    timer_file_entry* Entries;
} timer_entry_array;
#pragma pack(pop)

int StringLength(char* String) {
    int Count = 0;
    while (*String++) {
        ++Count;
    }
    return Count;
}

bool StringsMatch(char* A, char* B) {
    if (!A || !B) {
        return false;
    }

    while (*A && *B) {
        if (*A != *B){
            return false;
        }

        ++A;
        ++B;
    }

    if (*A != *B){
        return false;
    } else {
        return true;
    }
}

global f32 GlobalFrequency;

#define COUNTERTOMS   1.f / (GlobalFrequency / 1000.f)
#define COUNTERTOUS   COUNTERTOMS * 1000.f
#define COUNTERTONS   COUNTERTOUS * 1000.f
#define COUNTERTOS    COUNTERTOMS / 1000.f

//
// PLATFORM SPECIFIC CODE
//

// note(jax): Eventually support Mac...
#ifdef BUILD_LINUX
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <linux/limits.h>
#include <sys/time.h>

global void Usage(char** Args) {
    fprintf(stdout, "Usage: %s --begin <file>.aet [-v|--v|--verbose|-verbose]\n", Args[0]);
    fprintf(stdout, "       %s --end <file>.aet [-v|--v|--verbose|-verbose]\n", Args[0]);
}

// This function assumes FileName is a full path with an extension
char* GetBaseName(char* FileName) {
    int BaseNameSize = 0;
    char* BaseName = (char*)malloc(sizeof(char)*PATH_MAX);
    char* BaseNameBegin = FileName;
    char* BaseNameEnd = FileName + StringLength(FileName);
    bool RightOfPeriod = false;
    for (char* Scan = BaseNameBegin; *Scan; ++Scan) {
        if ((Scan[0] == '\\') || (Scan[0] == '/')) {
            BaseNameBegin = Scan + 1;
        }

        if (Scan[0] == '.') {
            BaseNameEnd = Scan;
            RightOfPeriod = true;
        }
        else if (!RightOfPeriod) {
            ++BaseNameSize;
        }
    }

    memcpy(BaseName, BaseNameBegin, BaseNameSize);
    BaseName[BaseNameSize] = 0;

    return BaseName;
}

uint64_t rdtsc(){
    unsigned int lo,hi;
    __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
    return ((uint64_t)hi << 32) | lo;
}

int main(int ArgCount, char** Args) {
    bool IsVerbose = false;
    if (StringsMatch(Args[3], "--verbose") ||
        StringsMatch(Args[3], "--v") ||
        StringsMatch(Args[3], "-verbose") ||
        StringsMatch(Args[3], "-v")) {
        IsVerbose = true;
    }

    char Path[PATH_MAX];
    sprintf(Path, "/tmp/");

    GlobalFrequency = 1000000;

    if (ArgCount >= 3) {
        if (StringsMatch(Args[1], "--begin")) {
            char* FileName = Args[2];
            sprintf(Path + strlen(Path), "%s", FileName);

            FILE* Dest = fopen(Path, "wb");
            if (Dest) {
                if (IsVerbose) {
                    printf("Writing to '%s'\n", Path);
                }

                timer_file_header Header = {0};
                Header.Magic = AET_MAGIC_VALUE;
                fwrite(&Header, sizeof(Header), 1, Dest);

                timer_file_entry Entry = {0};
                struct timespec Timer;
                clock_gettime(CLOCK_MONOTONIC_RAW, &Timer);
                Entry.Elapsed = (Timer.tv_nsec) + (Timer.tv_sec) * 1E9;

                printf("Compilation started for %s\n", GetBaseName(FileName));
                if (fwrite(&Entry, sizeof(Entry), 1, Dest) != 1) {
                    fprintf(stdout, "ERROR: Failed to append new start entry to file '%s'.\n", FileName);
                } else {
                    fclose(Dest);
                }
            } else {
                fprintf(stdout, "ERROR: Failed to open file '%s'.\n", FileName);
            }
        } else if (StringsMatch(Args[1], "--end")) {
            char* FileName = Args[2];
            sprintf(Path + strlen(Path), "%s", FileName);

            FILE* Dest = fopen(Path, "rb");
            if (Dest) {
                if (IsVerbose) {
                    printf("Reading from '%s'\n", Path);
                }

                timer_file_header Header = {0};
                fread(&Header, sizeof(Header), 1, Dest);
                if (IsVerbose) {
                    printf("struct timer_file_header {\n    Magic: %u\n};\n", Header.Magic);
                }

                timer_file_entry Entry = {0};
                if(fread(&Entry, sizeof(Entry), 1, Dest) == 1) {
                    struct timespec Timer;
                    clock_gettime(CLOCK_MONOTONIC_RAW, &Timer);

                    f32 Elapsed = ((Timer.tv_nsec) + (Timer.tv_sec) * 1E9) - Entry.Elapsed;
                    f32 Milliseconds = Elapsed / 1000.f / 1000.f;
                    f32 Seconds = Milliseconds / 1000.f;
                    printf("Compilation ended: %f seconds\n", Seconds);
                } else {
                    fprintf(stdout, "ERROR: Failed to read start entry from file '%s'.\n", FileName);
                }

                fclose(Dest);

                if (remove(Path) != 0) {
                    fprintf(stdout, "ERROR: Failed to remove file '%s'.\n", FileName);
                }
            } else {
                fprintf(stdout, "ERROR: Failed to open file '%s'.\n", FileName);
            }
        } else {
            Usage(Args);
        }
    } else {
        Usage(Args);
    }

    return 1;
}

#elif BUILD_WIN32
#include <Windows.h>

global void Usage(char** Args) {
    fprintf(stderr, "Usage: %s --begin <file>.aet [-v|--v|--verbose|-verbose]\n", Args[0]);
    fprintf(stderr, "       %s --end <file>.aet [-v|--v|--verbose|-verbose]\n", Args[0]);
}

// This function assumes FileName is a full path with an extension
char* GetBaseName(char* FileName) {
    int BaseNameSize = 0;
    char* BaseName = malloc(sizeof(char)*MAX_PATH);
    char* BaseNameBegin = FileName;
    char* BaseNameEnd = FileName + StringLength(FileName);
    bool RightOfPeriod = false;
    for (char* Scan = BaseNameBegin; *Scan; ++Scan) {
        if ((Scan[0] == '\\') || (Scan[0] == '/')) {
            BaseNameBegin = Scan + 1;
        }

        if (Scan[0] == '.') {
            BaseNameEnd = Scan;
            RightOfPeriod = true;
        }
        else if (!RightOfPeriod) {
            ++BaseNameSize;
        }
    }

    memcpy(BaseName, BaseNameBegin, BaseNameSize);
    BaseName[BaseNameSize] = 0;

    return BaseName;
}

int main(int ArgCount, char** Args) {
    bool IsVerbose = false;
    if (StringsMatch(Args[3], "--verbose") ||
        StringsMatch(Args[3], "--v") ||
        StringsMatch(Args[3], "-verbose") ||
        StringsMatch(Args[3], "-v")) {
        IsVerbose = true;
    }

	LARGE_INTEGER _F;
	QueryPerformanceFrequency(&_F);
	GlobalFrequency = (f32)_F.QuadPart;

    char Path[MAX_PATH];
    GetTempPathA(MAX_PATH, Path);

    if (ArgCount >= 3) {
        if (StringsMatch(Args[1], "--begin")) {
            char* FileName = Args[2];
            sprintf(Path, "%s\\%s", Path, FileName);
            FILE* Dest = fopen(Path, "wb");
            if (Dest) {
                if (IsVerbose) {
                    printf("Writing to '%s'\n", Path);
                }

                timer_file_header Header = {0};
                Header.Magic = AET_MAGIC_VALUE;
                fwrite(&Header, sizeof(Header), 1, Dest);

                LARGE_INTEGER Start;
                timer_file_entry Entry = {0};
	            QueryPerformanceCounter(&Start);
                Entry.Elapsed = (f32)Start.QuadPart;	

                printf("Compilation started for %s\n", GetBaseName(FileName));
                if (fwrite(&Entry, sizeof(Entry), 1, Dest) != 1) {
                    fprintf(stderr, "ERROR: Failed to append new start entry to file '%s'.\n", FileName);
                } else {
                    fclose(Dest);
                }
            } else {
                fprintf(stderr, "ERROR: Failed to open file '%s'.\n", FileName);
            }
        } else if (StringsMatch(Args[1], "--end")) {
            char* FileName = Args[2];
            sprintf(Path, "%s\\%s", Path, FileName);

            FILE* Dest = fopen(Path, "rb");
            if (Dest) {
                if (IsVerbose) {
                    printf("Reading from '%s'\n", Path);
                }

                timer_file_header Header = {0};
                fread(&Header, sizeof(Header), 1, Dest);
                if (IsVerbose) {
                    printf("struct timer_file_header {\n    Magic: %u\n};\n", Header.Magic);
                }

                timer_file_entry Entry = {0};
                if(fread(&Entry, sizeof(Entry), 1, Dest) == 1) {
                    LARGE_INTEGER End;
	                QueryPerformanceCounter(&End);

                    f32 Elapsed = ((f32)End.QuadPart) - Entry.Elapsed;
                    f32 Seconds = Elapsed * COUNTERTOS;
                    f32 Milliseconds = Elapsed * COUNTERTOMS;
                    printf("Compilation ended: %f seconds\n", Seconds);
                } else {
                    fprintf(stderr, "ERROR: Failed to read start entry from file '%s'.\n", FileName);
                }

                fclose(Dest);

                if (remove(Path) != 0) {
                    fprintf(stderr, "ERROR: Failed to remove file '%s'.\n", FileName);
                }
            } else {
                fprintf(stderr, "ERROR: Failed to open file '%s'.\n", FileName);
            }
        } else {
            Usage(Args);
        }
    } else {
        Usage(Args);
    }

    return 1;
}
#endif