| // Copyright (c) 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // This is a utility executable used for generating hashes for pepper |
| // interfaces for inclusion in tools/metrics/histograms/histograms.xml. Every |
| // interface-version pair must have a corresponding entry in the enum there. |
| // |
| // The hashing logic here must match the hashing logic at |
| // ppapi/proxy/interface_list.cc. |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "base/hash.h" |
| #include "base/macros.h" |
| |
| int main(int argc, char **argv) { |
| if (argc < 2) { |
| fprintf(stderr, "Usage: %s <interface1> <interface2> <...>\n", argv[0]); |
| fprintf(stderr, "\n"); |
| fprintf(stderr, "Prints hashes for interface names.\n"); |
| fprintf(stderr, "Example: %s \"PPB_Var;1.1\" \"PPB_FileIO;1.2\"\n", |
| argv[0]); |
| return 1; |
| } |
| for (int i = 1; i < argc; i++) { |
| uint32 data = base::Hash(argv[i], strlen(argv[i])); |
| |
| // Strip off the signed bit because UMA doesn't support negative values, |
| // but takes a signed int as input. |
| int hash = static_cast<int>(data & 0x7fffffff); |
| printf("<int value=\"%d\" label=\"%s\"/>\n", hash, argv[i]); |
| } |
| return 0; |
| } |