vendor/zstd/1.4.5vendor/zstd

6 files changed, 0 insertions, 877 deletions

diff --git a/contrib/seekable_format/examples/Makefile b/contrib/seekable_format/examples/Makefile
deleted file mode 100644
index 543780f75d34..000000000000
--- a/contrib/seekable_format/examples/Makefile
+++ /dev/null
@@ -1,53 +0,0 @@
-# ################################################################
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
-#
-# This source code is licensed under both the BSD-style license (found in the
-# LICENSE file in the root directory of this source tree) and the GPLv2 (found
-# in the COPYING file in the root directory of this source tree).
-# ################################################################
-
-# This Makefile presumes libzstd is built, using `make` in / or /lib/
-
-ZSTDLIB_PATH = ../../../lib
-ZSTDLIB_NAME = libzstd.a
-ZSTDLIB = $(ZSTDLIB_PATH)/$(ZSTDLIB_NAME)
-
-CPPFLAGS += -I../ -I../../../lib -I../../../lib/common
-
-CFLAGS ?= -O3
-CFLAGS += -g
-
-SEEKABLE_OBJS = ../zstdseek_compress.c ../zstdseek_decompress.c $(ZSTDLIB)
-
-.PHONY: default all clean test
-
-default: all
-
-all: seekable_compression seekable_decompression seekable_decompression_mem \
-	parallel_processing
-
-$(ZSTDLIB):
-	make -C $(ZSTDLIB_PATH) $(ZSTDLIB_NAME)
-
-seekable_compression : seekable_compression.c $(SEEKABLE_OBJS)
-	$(CC) $(CPPFLAGS) $(CFLAGS) $^ $(LDFLAGS) -o $@
-
-seekable_decompression : seekable_decompression.c $(SEEKABLE_OBJS)
-	$(CC) $(CPPFLAGS) $(CFLAGS) $^ $(LDFLAGS) -o $@
-
-seekable_decompression_mem : seekable_decompression_mem.c $(SEEKABLE_OBJS)
-	$(CC) $(CPPFLAGS) $(CFLAGS) $^ $(LDFLAGS) -o $@
-
-parallel_processing : parallel_processing.c $(SEEKABLE_OBJS)
-	$(CC) $(CPPFLAGS) $(CFLAGS) $^ $(LDFLAGS) -o $@ -pthread
-
-parallel_compression : parallel_compression.c $(SEEKABLE_OBJS)
-	$(CC) $(CPPFLAGS) $(CFLAGS) $^ $(LDFLAGS) -o $@ -pthread
-
-clean:
-	@rm -f core *.o tmp* result* *.zst \
-		seekable_compression seekable_decompression \
-		seekable_decompression_mem \
-		parallel_processing parallel_compression
-	@echo Cleaning completed
diff --git a/contrib/seekable_format/examples/parallel_compression.c b/contrib/seekable_format/examples/parallel_compression.c
deleted file mode 100644
index 69644d2b3c80..000000000000
--- a/contrib/seekable_format/examples/parallel_compression.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * Copyright (c) 2017-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- */
-
-#include <stdlib.h>    // malloc, free, exit, atoi
-#include <stdio.h>     // fprintf, perror, feof, fopen, etc.
-#include <string.h>    // strlen, memset, strcat
-#define ZSTD_STATIC_LINKING_ONLY
-#include <zstd.h>      // presumes zstd library is installed
-#include <zstd_errors.h>
-#if defined(WIN32) || defined(_WIN32)
-#  include <windows.h>
-#  define SLEEP(x) Sleep(x)
-#else
-#  include <unistd.h>
-#  define SLEEP(x) usleep(x * 1000)
-#endif
-
-#define XXH_NAMESPACE ZSTD_
-#include "xxhash.h"
-
-#include "pool.h"      // use zstd thread pool for demo
-
-#include "zstd_seekable.h"
-
-static void* malloc_orDie(size_t size)
-{
-    void* const buff = malloc(size);
-    if (buff) return buff;
-    /* error */
-    perror("malloc:");
-    exit(1);
-}
-
-static FILE* fopen_orDie(const char *filename, const char *instruction)
-{
-    FILE* const inFile = fopen(filename, instruction);
-    if (inFile) return inFile;
-    /* error */
-    perror(filename);
-    exit(3);
-}
-
-static size_t fread_orDie(void* buffer, size_t sizeToRead, FILE* file)
-{
-    size_t const readSize = fread(buffer, 1, sizeToRead, file);
-    if (readSize == sizeToRead) return readSize;   /* good */
-    if (feof(file)) return readSize;   /* good, reached end of file */
-    /* error */
-    perror("fread");
-    exit(4);
-}
-
-static size_t fwrite_orDie(const void* buffer, size_t sizeToWrite, FILE* file)
-{
-    size_t const writtenSize = fwrite(buffer, 1, sizeToWrite, file);
-    if (writtenSize == sizeToWrite) return sizeToWrite;   /* good */
-    /* error */
-    perror("fwrite");
-    exit(5);
-}
-
-static size_t fclose_orDie(FILE* file)
-{
-    if (!fclose(file)) return 0;
-    /* error */
-    perror("fclose");
-    exit(6);
-}
-
-static void fseek_orDie(FILE* file, long int offset, int origin)
-{
-    if (!fseek(file, offset, origin)) {
-        if (!fflush(file)) return;
-    }
-    /* error */
-    perror("fseek");
-    exit(7);
-}
-
-static long int ftell_orDie(FILE* file)
-{
-    long int off = ftell(file);
-    if (off != -1) return off;
-    /* error */
-    perror("ftell");
-    exit(8);
-}
-
-struct job {
-    const void* src;
-    size_t srcSize;
-    void* dst;
-    size_t dstSize;
-
-    unsigned checksum;
-
-    int compressionLevel;
-    int done;
-};
-
-static void compressFrame(void* opaque)
-{
-    struct job* job = opaque;
-
-    job->checksum = XXH64(job->src, job->srcSize, 0);
-
-    size_t ret = ZSTD_compress(job->dst, job->dstSize, job->src, job->srcSize, job->compressionLevel);
-    if (ZSTD_isError(ret)) {
-        fprintf(stderr, "ZSTD_compress() error : %s \n", ZSTD_getErrorName(ret));
-        exit(20);
-    }
-
-    job->dstSize = ret;
-    job->done = 1;
-}
-
-static void compressFile_orDie(const char* fname, const char* outName, int cLevel, unsigned frameSize, int nbThreads)
-{
-    POOL_ctx* pool = POOL_create(nbThreads, nbThreads);
-    if (pool == NULL) { fprintf(stderr, "POOL_create() error \n"); exit(9); }
-
-    FILE* const fin  = fopen_orDie(fname, "rb");
-    FILE* const fout = fopen_orDie(outName, "wb");
-
-    if (ZSTD_compressBound(frameSize) > 0xFFFFFFFFU) { fprintf(stderr, "Frame size too large \n"); exit(10); }
-    unsigned dstSize = ZSTD_compressBound(frameSize);
-
-
-    fseek_orDie(fin, 0, SEEK_END);
-    long int length = ftell_orDie(fin);
-    fseek_orDie(fin, 0, SEEK_SET);
-
-    size_t numFrames = (length + frameSize - 1) / frameSize;
-
-    struct job* jobs = malloc_orDie(sizeof(struct job) * numFrames);
-
-    size_t i;
-    for(i = 0; i < numFrames; i++) {
-        void* in = malloc_orDie(frameSize);
-        void* out = malloc_orDie(dstSize);
-
-        size_t inSize = fread_orDie(in, frameSize, fin);
-
-        jobs[i].src = in;
-        jobs[i].srcSize = inSize;
-        jobs[i].dst = out;
-        jobs[i].dstSize = dstSize;
-        jobs[i].compressionLevel = cLevel;
-        jobs[i].done = 0;
-        POOL_add(pool, compressFrame, &jobs[i]);
-    }
-
-    ZSTD_frameLog* fl = ZSTD_seekable_createFrameLog(1);
-    if (fl == NULL) { fprintf(stderr, "ZSTD_seekable_createFrameLog() failed \n"); exit(11); }
-    for (i = 0; i < numFrames; i++) {
-        while (!jobs[i].done) SLEEP(5); /* wake up every 5 milliseconds to check */
-        fwrite_orDie(jobs[i].dst, jobs[i].dstSize, fout);
-        free((void*)jobs[i].src);
-        free(jobs[i].dst);
-
-        size_t ret = ZSTD_seekable_logFrame(fl, jobs[i].dstSize, jobs[i].srcSize, jobs[i].checksum);
-        if (ZSTD_isError(ret)) { fprintf(stderr, "ZSTD_seekable_logFrame() error : %s \n", ZSTD_getErrorName(ret)); }
-    }
-
-    {   unsigned char seekTableBuff[1024];
-        ZSTD_outBuffer out = {seekTableBuff, 1024, 0};
-        while (ZSTD_seekable_writeSeekTable(fl, &out) != 0) {
-            fwrite_orDie(seekTableBuff, out.pos, fout);
-            out.pos = 0;
-        }
-        fwrite_orDie(seekTableBuff, out.pos, fout);
-    }
-
-    ZSTD_seekable_freeFrameLog(fl);
-    free(jobs);
-    fclose_orDie(fout);
-    fclose_orDie(fin);
-}
-
-static const char* createOutFilename_orDie(const char* filename)
-{
-    size_t const inL = strlen(filename);
-    size_t const outL = inL + 5;
-    void* outSpace = malloc_orDie(outL);
-    memset(outSpace, 0, outL);
-    strcat(outSpace, filename);
-    strcat(outSpace, ".zst");
-    return (const char*)outSpace;
-}
-
-int main(int argc, const char** argv) {
-    const char* const exeName = argv[0];
-    if (argc!=4) {
-        printf("wrong arguments\n");
-        printf("usage:\n");
-        printf("%s FILE FRAME_SIZE NB_THREADS\n", exeName);
-        return 1;
-    }
-
-    {   const char* const inFileName = argv[1];
-        unsigned const frameSize = (unsigned)atoi(argv[2]);
-        int const nbThreads = atoi(argv[3]);
-
-        const char* const outFileName = createOutFilename_orDie(inFileName);
-        compressFile_orDie(inFileName, outFileName, 5, frameSize, nbThreads);
-    }
-
-    return 0;
-}
diff --git a/contrib/seekable_format/examples/parallel_processing.c b/contrib/seekable_format/examples/parallel_processing.c
deleted file mode 100644
index 36226b49fd3c..000000000000
--- a/contrib/seekable_format/examples/parallel_processing.c
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * Copyright (c) 2017-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- */
-
-/*
- * A simple demo that sums up all the bytes in the file in parallel using
- * seekable decompression and the zstd thread pool
- */
-
-#include <stdlib.h>    // malloc, exit
-#include <stdio.h>     // fprintf, perror, feof
-#include <string.h>    // strerror
-#include <errno.h>     // errno
-#define ZSTD_STATIC_LINKING_ONLY
-#include <zstd.h>      // presumes zstd library is installed
-#include <zstd_errors.h>
-#if defined(WIN32) || defined(_WIN32)
-#  include <windows.h>
-#  define SLEEP(x) Sleep(x)
-#else
-#  include <unistd.h>
-#  define SLEEP(x) usleep(x * 1000)
-#endif
-
-#include "pool.h"      // use zstd thread pool for demo
-
-#include "zstd_seekable.h"
-
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-
-static void* malloc_orDie(size_t size)
-{
-    void* const buff = malloc(size);
-    if (buff) return buff;
-    /* error */
-    perror("malloc");
-    exit(1);
-}
-
-static void* realloc_orDie(void* ptr, size_t size)
-{
-    ptr = realloc(ptr, size);
-    if (ptr) return ptr;
-    /* error */
-    perror("realloc");
-    exit(1);
-}
-
-static FILE* fopen_orDie(const char *filename, const char *instruction)
-{
-    FILE* const inFile = fopen(filename, instruction);
-    if (inFile) return inFile;
-    /* error */
-    perror(filename);
-    exit(3);
-}
-
-static size_t fread_orDie(void* buffer, size_t sizeToRead, FILE* file)
-{
-    size_t const readSize = fread(buffer, 1, sizeToRead, file);
-    if (readSize == sizeToRead) return readSize;   /* good */
-    if (feof(file)) return readSize;   /* good, reached end of file */
-    /* error */
-    perror("fread");
-    exit(4);
-}
-
-static size_t fwrite_orDie(const void* buffer, size_t sizeToWrite, FILE* file)
-{
-    size_t const writtenSize = fwrite(buffer, 1, sizeToWrite, file);
-    if (writtenSize == sizeToWrite) return sizeToWrite;   /* good */
-    /* error */
-    perror("fwrite");
-    exit(5);
-}
-
-static size_t fclose_orDie(FILE* file)
-{
-    if (!fclose(file)) return 0;
-    /* error */
-    perror("fclose");
-    exit(6);
-}
-
-static void fseek_orDie(FILE* file, long int offset, int origin) {
-    if (!fseek(file, offset, origin)) {
-        if (!fflush(file)) return;
-    }
-    /* error */
-    perror("fseek");
-    exit(7);
-}
-
-struct sum_job {
-    const char* fname;
-    unsigned long long sum;
-    unsigned frameNb;
-    int done;
-};
-
-static void sumFrame(void* opaque)
-{
-    struct sum_job* job = (struct sum_job*)opaque;
-    job->done = 0;
-
-    FILE* const fin = fopen_orDie(job->fname, "rb");
-
-    ZSTD_seekable* const seekable = ZSTD_seekable_create();
-    if (seekable==NULL) { fprintf(stderr, "ZSTD_seekable_create() error \n"); exit(10); }
-
-    size_t const initResult = ZSTD_seekable_initFile(seekable, fin);
-    if (ZSTD_isError(initResult)) { fprintf(stderr, "ZSTD_seekable_init() error : %s \n", ZSTD_getErrorName(initResult)); exit(11); }
-
-    size_t const frameSize = ZSTD_seekable_getFrameDecompressedSize(seekable, job->frameNb);
-    unsigned char* data = malloc_orDie(frameSize);
-
-    size_t result = ZSTD_seekable_decompressFrame(seekable, data, frameSize, job->frameNb);
-    if (ZSTD_isError(result)) { fprintf(stderr, "ZSTD_seekable_decompressFrame() error : %s \n", ZSTD_getErrorName(result)); exit(12); }
-
-    unsigned long long sum = 0;
-    size_t i;
-    for (i = 0; i < frameSize; i++) {
-        sum += data[i];
-    }
-    job->sum = sum;
-    job->done = 1;
-
-    fclose(fin);
-    ZSTD_seekable_free(seekable);
-    free(data);
-}
-
-static void sumFile_orDie(const char* fname, int nbThreads)
-{
-    POOL_ctx* pool = POOL_create(nbThreads, nbThreads);
-    if (pool == NULL) { fprintf(stderr, "POOL_create() error \n"); exit(9); }
-
-    FILE* const fin = fopen_orDie(fname, "rb");
-
-    ZSTD_seekable* const seekable = ZSTD_seekable_create();
-    if (seekable==NULL) { fprintf(stderr, "ZSTD_seekable_create() error \n"); exit(10); }
-
-    size_t const initResult = ZSTD_seekable_initFile(seekable, fin);
-    if (ZSTD_isError(initResult)) { fprintf(stderr, "ZSTD_seekable_init() error : %s \n", ZSTD_getErrorName(initResult)); exit(11); }
-
-    unsigned const numFrames = ZSTD_seekable_getNumFrames(seekable);
-    struct sum_job* jobs = (struct sum_job*)malloc(numFrames * sizeof(struct sum_job));
-
-    unsigned fnb;
-    for (fnb = 0; fnb < numFrames; fnb++) {
-        jobs[fnb] = (struct sum_job){ fname, 0, fnb, 0 };
-        POOL_add(pool, sumFrame, &jobs[fnb]);
-    }
-
-    unsigned long long total = 0;
-
-    for (fnb = 0; fnb < numFrames; fnb++) {
-        while (!jobs[fnb].done) SLEEP(5); /* wake up every 5 milliseconds to check */
-        total += jobs[fnb].sum;
-    }
-
-    printf("Sum: %llu\n", total);
-
-    POOL_free(pool);
-    ZSTD_seekable_free(seekable);
-    fclose(fin);
-    free(jobs);
-}
-
-
-int main(int argc, const char** argv)
-{
-    const char* const exeName = argv[0];
-
-    if (argc!=3) {
-        fprintf(stderr, "wrong arguments\n");
-        fprintf(stderr, "usage:\n");
-        fprintf(stderr, "%s FILE NB_THREADS\n", exeName);
-        return 1;
-    }
-
-    {
-        const char* const inFilename = argv[1];
-        int const nbThreads = atoi(argv[2]);
-        sumFile_orDie(inFilename, nbThreads);
-    }
-
-    return 0;
-}
diff --git a/contrib/seekable_format/examples/seekable_compression.c b/contrib/seekable_format/examples/seekable_compression.c
deleted file mode 100644
index 9a331a89531e..000000000000
--- a/contrib/seekable_format/examples/seekable_compression.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (c) 2017-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- */
-
-#include <stdlib.h>    // malloc, free, exit, atoi
-#include <stdio.h>     // fprintf, perror, feof, fopen, etc.
-#include <string.h>    // strlen, memset, strcat
-#define ZSTD_STATIC_LINKING_ONLY
-#include <zstd.h>      // presumes zstd library is installed
-
-#include "zstd_seekable.h"
-
-static void* malloc_orDie(size_t size)
-{
-    void* const buff = malloc(size);
-    if (buff) return buff;
-    /* error */
-    perror("malloc:");
-    exit(1);
-}
-
-static FILE* fopen_orDie(const char *filename, const char *instruction)
-{
-    FILE* const inFile = fopen(filename, instruction);
-    if (inFile) return inFile;
-    /* error */
-    perror(filename);
-    exit(3);
-}
-
-static size_t fread_orDie(void* buffer, size_t sizeToRead, FILE* file)
-{
-    size_t const readSize = fread(buffer, 1, sizeToRead, file);
-    if (readSize == sizeToRead) return readSize;   /* good */
-    if (feof(file)) return readSize;   /* good, reached end of file */
-    /* error */
-    perror("fread");
-    exit(4);
-}
-
-static size_t fwrite_orDie(const void* buffer, size_t sizeToWrite, FILE* file)
-{
-    size_t const writtenSize = fwrite(buffer, 1, sizeToWrite, file);
-    if (writtenSize == sizeToWrite) return sizeToWrite;   /* good */
-    /* error */
-    perror("fwrite");
-    exit(5);
-}
-
-static size_t fclose_orDie(FILE* file)
-{
-    if (!fclose(file)) return 0;
-    /* error */
-    perror("fclose");
-    exit(6);
-}
-
-static void compressFile_orDie(const char* fname, const char* outName, int cLevel, unsigned frameSize)
-{
-    FILE* const fin  = fopen_orDie(fname, "rb");
-    FILE* const fout = fopen_orDie(outName, "wb");
-    size_t const buffInSize = ZSTD_CStreamInSize();    /* can always read one full block */
-    void*  const buffIn  = malloc_orDie(buffInSize);
-    size_t const buffOutSize = ZSTD_CStreamOutSize();  /* can always flush a full block */
-    void*  const buffOut = malloc_orDie(buffOutSize);
-
-    ZSTD_seekable_CStream* const cstream = ZSTD_seekable_createCStream();
-    if (cstream==NULL) { fprintf(stderr, "ZSTD_seekable_createCStream() error \n"); exit(10); }
-    size_t const initResult = ZSTD_seekable_initCStream(cstream, cLevel, 1, frameSize);
-    if (ZSTD_isError(initResult)) { fprintf(stderr, "ZSTD_seekable_initCStream() error : %s \n", ZSTD_getErrorName(initResult)); exit(11); }
-
-    size_t read, toRead = buffInSize;
-    while( (read = fread_orDie(buffIn, toRead, fin)) ) {
-        ZSTD_inBuffer input = { buffIn, read, 0 };
-        while (input.pos < input.size) {
-            ZSTD_outBuffer output = { buffOut, buffOutSize, 0 };
-            toRead = ZSTD_seekable_compressStream(cstream, &output , &input);   /* toRead is guaranteed to be <= ZSTD_CStreamInSize() */
-            if (ZSTD_isError(toRead)) { fprintf(stderr, "ZSTD_seekable_compressStream() error : %s \n", ZSTD_getErrorName(toRead)); exit(12); }
-            if (toRead > buffInSize) toRead = buffInSize;   /* Safely handle case when `buffInSize` is manually changed to a value < ZSTD_CStreamInSize()*/
-            fwrite_orDie(buffOut, output.pos, fout);
-        }
-    }
-
-    while (1) {
-        ZSTD_outBuffer output = { buffOut, buffOutSize, 0 };
-        size_t const remainingToFlush = ZSTD_seekable_endStream(cstream, &output);   /* close stream */
-        if (ZSTD_isError(remainingToFlush)) { fprintf(stderr, "ZSTD_seekable_endStream() error : %s \n", ZSTD_getErrorName(remainingToFlush)); exit(13); }
-        fwrite_orDie(buffOut, output.pos, fout);
-        if (!remainingToFlush) break;
-    }
-
-    ZSTD_seekable_freeCStream(cstream);
-    fclose_orDie(fout);
-    fclose_orDie(fin);
-    free(buffIn);
-    free(buffOut);
-}
-
-static char* createOutFilename_orDie(const char* filename)
-{
-    size_t const inL = strlen(filename);
-    size_t const outL = inL + 5;
-    void* outSpace = malloc_orDie(outL);
-    memset(outSpace, 0, outL);
-    strcat(outSpace, filename);
-    strcat(outSpace, ".zst");
-    return (char*)outSpace;
-}
-
-int main(int argc, const char** argv) {
-    const char* const exeName = argv[0];
-    if (argc!=3) {
-        printf("wrong arguments\n");
-        printf("usage:\n");
-        printf("%s FILE FRAME_SIZE\n", exeName);
-        return 1;
-    }
-
-    {   const char* const inFileName = argv[1];
-        unsigned const frameSize = (unsigned)atoi(argv[2]);
-
-        char* const outFileName = createOutFilename_orDie(inFileName);
-        compressFile_orDie(inFileName, outFileName, 5, frameSize);
-        free(outFileName);
-    }
-
-    return 0;
-}
diff --git a/contrib/seekable_format/examples/seekable_decompression.c b/contrib/seekable_format/examples/seekable_decompression.c
deleted file mode 100644
index 7050e0fa5c64..000000000000
--- a/contrib/seekable_format/examples/seekable_decompression.c
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright (c) 2017-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- */
-
-
-#include <stdlib.h>    // malloc, exit
-#include <stdio.h>     // fprintf, perror, feof
-#include <string.h>    // strerror
-#include <errno.h>     // errno
-#define ZSTD_STATIC_LINKING_ONLY
-#include <zstd.h>      // presumes zstd library is installed
-#include <zstd_errors.h>
-
-#include "zstd_seekable.h"
-
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-
-static void* malloc_orDie(size_t size)
-{
-    void* const buff = malloc(size);
-    if (buff) return buff;
-    /* error */
-    perror("malloc");
-    exit(1);
-}
-
-static void* realloc_orDie(void* ptr, size_t size)
-{
-    ptr = realloc(ptr, size);
-    if (ptr) return ptr;
-    /* error */
-    perror("realloc");
-    exit(1);
-}
-
-static FILE* fopen_orDie(const char *filename, const char *instruction)
-{
-    FILE* const inFile = fopen(filename, instruction);
-    if (inFile) return inFile;
-    /* error */
-    perror(filename);
-    exit(3);
-}
-
-static size_t fread_orDie(void* buffer, size_t sizeToRead, FILE* file)
-{
-    size_t const readSize = fread(buffer, 1, sizeToRead, file);
-    if (readSize == sizeToRead) return readSize;   /* good */
-    if (feof(file)) return readSize;   /* good, reached end of file */
-    /* error */
-    perror("fread");
-    exit(4);
-}
-
-static size_t fwrite_orDie(const void* buffer, size_t sizeToWrite, FILE* file)
-{
-    size_t const writtenSize = fwrite(buffer, 1, sizeToWrite, file);
-    if (writtenSize == sizeToWrite) return sizeToWrite;   /* good */
-    /* error */
-    perror("fwrite");
-    exit(5);
-}
-
-static size_t fclose_orDie(FILE* file)
-{
-    if (!fclose(file)) return 0;
-    /* error */
-    perror("fclose");
-    exit(6);
-}
-
-static void fseek_orDie(FILE* file, long int offset, int origin) {
-    if (!fseek(file, offset, origin)) {
-        if (!fflush(file)) return;
-    }
-    /* error */
-    perror("fseek");
-    exit(7);
-}
-
-
-static void decompressFile_orDie(const char* fname, off_t startOffset, off_t endOffset)
-{
-    FILE* const fin  = fopen_orDie(fname, "rb");
-    FILE* const fout = stdout;
-    size_t const buffOutSize = ZSTD_DStreamOutSize();  /* Guarantee to successfully flush at least one complete compressed block in all circumstances. */
-    void*  const buffOut = malloc_orDie(buffOutSize);
-
-    ZSTD_seekable* const seekable = ZSTD_seekable_create();
-    if (seekable==NULL) { fprintf(stderr, "ZSTD_seekable_create() error \n"); exit(10); }
-
-    size_t const initResult = ZSTD_seekable_initFile(seekable, fin);
-    if (ZSTD_isError(initResult)) { fprintf(stderr, "ZSTD_seekable_init() error : %s \n", ZSTD_getErrorName(initResult)); exit(11); }
-
-    while (startOffset < endOffset) {
-        size_t const result = ZSTD_seekable_decompress(seekable, buffOut, MIN(endOffset - startOffset, buffOutSize), startOffset);
-
-        if (ZSTD_isError(result)) {
-            fprintf(stderr, "ZSTD_seekable_decompress() error : %s \n",
-                    ZSTD_getErrorName(result));
-            exit(12);
-        }
-        fwrite_orDie(buffOut, result, fout);
-        startOffset += result;
-    }
-
-    ZSTD_seekable_free(seekable);
-    fclose_orDie(fin);
-    fclose_orDie(fout);
-    free(buffOut);
-}
-
-
-int main(int argc, const char** argv)
-{
-    const char* const exeName = argv[0];
-
-    if (argc!=4) {
-        fprintf(stderr, "wrong arguments\n");
-        fprintf(stderr, "usage:\n");
-        fprintf(stderr, "%s FILE START END\n", exeName);
-        return 1;
-    }
-
-    {
-        const char* const inFilename = argv[1];
-        off_t const startOffset = atoll(argv[2]);
-        off_t const endOffset = atoll(argv[3]);
-        decompressFile_orDie(inFilename, startOffset, endOffset);
-    }
-
-    return 0;
-}
diff --git a/contrib/seekable_format/examples/seekable_decompression_mem.c b/contrib/seekable_format/examples/seekable_decompression_mem.c
deleted file mode 100644
index c36d2221f97e..000000000000
--- a/contrib/seekable_format/examples/seekable_decompression_mem.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Copyright (c) 2017-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- */
-
-
-#include <stdlib.h>    // malloc, exit
-#include <stdio.h>     // fprintf, perror, feof
-#include <string.h>    // strerror
-#include <errno.h>     // errno
-#define ZSTD_STATIC_LINKING_ONLY
-#include <zstd.h>      // presumes zstd library is installed
-#include <zstd_errors.h>
-
-#include "zstd_seekable.h"
-
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-
-#define MAX_FILE_SIZE (8 * 1024 * 1024)
-
-static void* malloc_orDie(size_t size)
-{
-    void* const buff = malloc(size);
-    if (buff) return buff;
-    /* error */
-    perror("malloc");
-    exit(1);
-}
-
-static void* realloc_orDie(void* ptr, size_t size)
-{
-    ptr = realloc(ptr, size);
-    if (ptr) return ptr;
-    /* error */
-    perror("realloc");
-    exit(1);
-}
-
-static FILE* fopen_orDie(const char *filename, const char *instruction)
-{
-    FILE* const inFile = fopen(filename, instruction);
-    if (inFile) return inFile;
-    /* error */
-    perror(filename);
-    exit(3);
-}
-
-static size_t fread_orDie(void* buffer, size_t sizeToRead, FILE* file)
-{
-    size_t const readSize = fread(buffer, 1, sizeToRead, file);
-    if (readSize == sizeToRead) return readSize;   /* good */
-    if (feof(file)) return readSize;   /* good, reached end of file */
-    /* error */
-    perror("fread");
-    exit(4);
-}
-
-static size_t fwrite_orDie(const void* buffer, size_t sizeToWrite, FILE* file)
-{
-    size_t const writtenSize = fwrite(buffer, 1, sizeToWrite, file);
-    if (writtenSize == sizeToWrite) return sizeToWrite;   /* good */
-    /* error */
-    perror("fwrite");
-    exit(5);
-}
-
-static size_t fclose_orDie(FILE* file)
-{
-    if (!fclose(file)) return 0;
-    /* error */
-    perror("fclose");
-    exit(6);
-}
-
-static void fseek_orDie(FILE* file, long int offset, int origin) {
-    if (!fseek(file, offset, origin)) {
-        if (!fflush(file)) return;
-    }
-    /* error */
-    perror("fseek");
-    exit(7);
-}
-
-
-static void decompressFile_orDie(const char* fname, off_t startOffset, off_t endOffset)
-{
-    FILE* const fin  = fopen_orDie(fname, "rb");
-    FILE* const fout = stdout;
-    // Just for demo purposes, assume file is <= MAX_FILE_SIZE
-    void*  const buffIn = malloc_orDie(MAX_FILE_SIZE);
-    size_t const inSize = fread_orDie(buffIn, MAX_FILE_SIZE, fin);
-    size_t const buffOutSize = ZSTD_DStreamOutSize();  /* Guarantee to successfully flush at least one complete compressed block in all circumstances. */
-    void*  const buffOut = malloc_orDie(buffOutSize);
-
-    ZSTD_seekable* const seekable = ZSTD_seekable_create();
-    if (seekable==NULL) { fprintf(stderr, "ZSTD_seekable_create() error \n"); exit(10); }
-
-    size_t const initResult = ZSTD_seekable_initBuff(seekable, buffIn, inSize);
-    if (ZSTD_isError(initResult)) { fprintf(stderr, "ZSTD_seekable_init() error : %s \n", ZSTD_getErrorName(initResult)); exit(11); }
-
-    while (startOffset < endOffset) {
-        size_t const result = ZSTD_seekable_decompress(seekable, buffOut, MIN(endOffset - startOffset, buffOutSize), startOffset);
-
-        if (ZSTD_isError(result)) {
-            fprintf(stderr, "ZSTD_seekable_decompress() error : %s \n",
-                    ZSTD_getErrorName(result));
-            exit(12);
-        }
-        fwrite_orDie(buffOut, result, fout);
-        startOffset += result;
-    }
-
-    ZSTD_seekable_free(seekable);
-    fclose_orDie(fin);
-    fclose_orDie(fout);
-    free(buffIn);
-    free(buffOut);
-}
-
-
-int main(int argc, const char** argv)
-{
-    const char* const exeName = argv[0];
-
-    if (argc!=4) {
-        fprintf(stderr, "wrong arguments\n");
-        fprintf(stderr, "usage:\n");
-        fprintf(stderr, "%s FILE START END\n", exeName);
-        return 1;
-    }
-
-    {
-        const char* const inFilename = argv[1];
-        off_t const startOffset = atoll(argv[2]);
-        off_t const endOffset = atoll(argv[3]);
-        decompressFile_orDie(inFilename, startOffset, endOffset);
-    }
-
-    return 0;
-}