cli-tarHow do I use tar gzip in a multithreaded environment?
Tar Gzip can be used in a multithreaded environment to compress and decompress files in parallel. It uses a combination of tar and gzip to speed up the process. The following example code shows how to use tar gzip in a multithreaded environment:
#include <stdio.h>
#include <pthread.h>
#include <zlib.h>
#include <tar.h>
int main(int argc, char** argv)
{
// Create a thread for each file to be compressed
pthread_t threads[argc-1];
for (int i = 1; i < argc; i++) {
pthread_create(&threads[i-1], NULL, tar_gzip, argv[i]);
}
// Wait for all threads to finish
for (int i = 0; i < argc-1; i++) {
pthread_join(threads[i], NULL);
}
return 0;
}
void* tar_gzip(void* filename)
{
// Open the file
FILE* fp = fopen((char*)filename, "rb");
// Create a buffer to store the compressed data
char buffer[BUFSIZ];
// Setup the tar header
struct tar_header header;
strncpy(header.name, (char*)filename, 100);
header.typeflag = REGTYPE;
header.size = get_file_size(fp);
// Compress the data
gzFile gzf = gzopen(buffer, "wb");
gzwrite(gzf, fp, header.size);
gzclose(gzf);
// Write the tar header and compressed data to the file
fwrite(&header, sizeof(struct tar_header), 1, fp);
fwrite(buffer, sizeof(char), get_compressed_size(buffer), fp);
// Close the file
fclose(fp);
}
The code above demonstrates how to use tar gzip in a multithreaded environment:
- Create a thread for each file to be compressed.
- Wait for all threads to finish.
- Open the file.
- Create a buffer to store the compressed data.
- Setup the tar header.
- Compress the data.
- Write the tar header and compressed data to the file.
- Close the file.
Helpful links
More of Cli Tar
- How do I use the Unix tar zip command?
- How do I use the command line to tar and zip files?
- How can I use tar commands to zip a file?
- How do I use the command line to tar and zip a file?
- How do I use the shell to tar and zip files?
- How do I create a tar.zip file in Unix?
- How do I use the command line to tar and distribute files?
- How do I use the command line to tar and zip a file?
- How do I compare Unix tar and zip files?
- How do I use gzip, tar, and zip to compress files?
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