[Xapian-tickets] [Xapian] #767: Make testcases using different backends run in parallel

[Xapian]

#767: Make testcases using different backends run in parallel
--------------------+---------------------------
 Reporter:  gp1308  |             Owner:  gp1308
     Type:  task    |            Status:  new
 Priority:  normal  |         Milestone:
Component:  Other   |           Version:
 Severity:  normal  |        Resolution:
 Keywords:          |        Blocked By:
 Blocking:          |  Operating System:  All
--------------------+---------------------------

Comment (by gp1308):

 I tried this - In `testrunner.cc`, ignoring the exception handling, output
 format with Valgrind disabled:
 {{{

    128         int children_count = 0;
    129         pid_t pid;
    130 #ifdef XAPIAN_HAS_HONEY_BACKEND
    131         pid = fork();
    132         if (pid == 0) {
    133             do_tests_for_backend(BackendManagerHoney(datadir));
    134             exit(0);
    135         }
    136         children_count++;
    137 #endif
    138
    139         pid = fork();
    140         if (pid == 0) {
    141             do_tests_for_backend(BackendManager(string()));
    142             exit(0);
    143         }
    144         children_count++;
    145
    146 #ifdef XAPIAN_HAS_INMEMORY_BACKEND
    147         pid = fork();
    148         if (pid == 0) {
    149             do_tests_for_backend(BackendManagerInMemory(datadir));
    150             exit(0);
    151         }
    152         children_count++;
    153 #endif
    154
    155 #ifdef XAPIAN_HAS_GLASS_BACKEND
    156         {
    157             BackendManagerGlass glass_man(datadir);
    158             do_tests_for_backend(glass_man);
    159             do_tests_for_backend(BackendManagerSingleFile(datadir,
 &glass_man));
    160             do_tests_for_backend(BackendManagerMulti(datadir,
 &glass_man));
    161 # ifdef XAPIAN_HAS_REMOTE_BACKEND
    162
 do_tests_for_backend(BackendManagerRemoteProg(&glass_man));
    163
 do_tests_for_backend(BackendManagerRemoteTcp(&glass_man));
    164 # endif
    165         }
    166 #endif
    167         int status;
    168         for (int i = children_count; i != 0; --i) {
    169             wait(&status);
    170         }
 }}}

 Run time with parallel:
 {{{
 real    1m49.777s
 user    0m48.546s
 sys     0m31.740s
 }}}

 Run time without parallel:
 {{{
 real    2m2.414s
 user    0m42.655s
 sys     0m30.834s
 }}}

 With Valgrind enabled, I got these prints for few testcases - `Leak
 summary:` and ` 304 bytes in 1 blocks are possibly lost in loss record 52
 of 57`. I guess these prints are from Valgrind.

--
Ticket URL: <https://trac.xapian.org/ticket/767#comment:2>
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