Created
February 25, 2014 19:34
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| #!/usr/bin/python | |
| import sys, os | |
| USAGE="""progbar.py PROCESS_ID [FILE_DESCRIPTOR_NUMBER] | |
| Usage: | |
| progbar.py PROCESS_ID | |
| Prints all file descriptor numbers along with the location of | |
| each. | |
| progbar.py PROCESS_ID FILE_DESCRIPTOR | |
| """ | |
| if len(sys.argv) == 2: | |
| # Case 1: Print all file descriptor numbers and filenames. | |
| pid = sys.argv[1] | |
| fd_dir = os.path.join('/proc', pid, 'fd') | |
| fds = os.listdir(fd_dir) | |
| for fd in fds: | |
| print fd, "=>", os.readlink(os.path.join(fd_dir, fd)) | |
| elif len(sys.argv) == 3: | |
| # Case 2: Print the location of the file pointer, this file size, | |
| # and the percentage of the file behind the file pointer. | |
| pid = sys.argv[1] | |
| fd = sys.argv[2] | |
| # step 1: get current location | |
| fdinfo_filename = os.path.join('/proc', pid, 'fdinfo', fd) | |
| fdinfo_handle = file(fdinfo_filename) | |
| location = int(fdinfo_handle.readlines()[0].split()[1]) | |
| fdinfo_handle.close() | |
| # step 2: get total size. | |
| file_path = os.readlink(os.path.join('/proc', pid, 'fd', fd)) | |
| size = os.stat(file_path).st_size | |
| # report | |
| print location, "/", size | |
| print "%.2f%%" % (float(location)/float(size)*100) | |
| else: | |
| # Case 3: Print usage and exit | |
| print USAGE |
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