diff options
Diffstat (limited to 'ev.pod')
| -rw-r--r-- | ev.pod | 60 |
1 files changed, 15 insertions, 45 deletions
@@ -3840,48 +3840,13 @@ fine. If your embedding application does not need any priorities, defining these both to C<0> will save some memory and CPU. -=item EV_PERIODIC_ENABLE +=item EV_PERIODIC_ENABLE, EV_IDLE_ENABLE, EV_EMBED_ENABLE, EV_STAT_ENABLE, +EV_PREPARE_ENABLE, EV_CHECK_ENABLE, EV_FORK_ENABLE, EV_SIGNAL_ENABLE, +EV_ASYNC_ENABLE, EV_CHILD_ENABLE. -If undefined or defined to be C<1>, then periodic timers are supported. If -defined to be C<0>, then they are not. Disabling them saves a few kB of -code. - -=item EV_IDLE_ENABLE - -If undefined or defined to be C<1>, then idle watchers are supported. If -defined to be C<0>, then they are not. Disabling them saves a few kB of -code. - -=item EV_EMBED_ENABLE - -If undefined or defined to be C<1>, then embed watchers are supported. If -defined to be C<0>, then they are not. Embed watchers rely on most other -watcher types, which therefore must not be disabled. - -=item EV_STAT_ENABLE - -If undefined or defined to be C<1>, then stat watchers are supported. If -defined to be C<0>, then they are not. - -=item EV_FORK_ENABLE - -If undefined or defined to be C<1>, then fork watchers are supported. If -defined to be C<0>, then they are not. - -=item EV_SIGNAL_ENABLE - -If undefined or defined to be C<1>, then signal watchers are supported. If -defined to be C<0>, then they are not. - -=item EV_ASYNC_ENABLE - -If undefined or defined to be C<1>, then async watchers are supported. If -defined to be C<0>, then they are not. - -=item EV_CHILD_ENABLE - -If undefined or defined to be C<1> (and C<_WIN32> is not defined), then -child watchers are supported. If defined to be C<0>, then they are not. +If undefined or defined to be C<1> (and the platform supports it), then +the respective watcher type is supported. If defined to be C<0>, then it +is not. Disabling watcher types mainly saves codesize. =item EV_MINIMAL @@ -3902,10 +3867,13 @@ provide a bare-bones event library. See C<ev.h> for details on what parts of the API are still available, and do not complain if this subset changes over time. -This example set of settings reduces the compiled size of libev from 24Kb -to 8Kb on my GNU/Linux amd64 system (and leaves little in - there is also -an effect on the amount of memory used). With an intelligent-enough linker -further unused functions might be left out as well automatically. +This example set of settings reduces the compiled size of libev from +23.9Kb to 7.7Kb on my GNU/Linux amd64 system (and leaves little +in - there is also an effect on the amount of memory used). With +an intelligent-enough linker (gcc+binutils do this when you use +C<-Wl,--gc-sections -ffunction-sections>) further unused functions might +be left out as well automatically - a binary starting a timer and an I/O +watcher then might come out at only 5Kb. // tuning and API changes #define EV_MINIMAL 2 @@ -3931,6 +3899,8 @@ further unused functions might be left out as well automatically. #define EV_STAT_ENABLE 0 #define EV_PERIODIC_ENABLE 0 #define EV_IDLE_ENABLE 0 + #define EV_CHECK_ENABLE 0 + #define EV_PREPARE_ENABLE 0 #define EV_FORK_ENABLE 0 #define EV_SIGNAL_ENABLE 0 #define EV_CHILD_ENABLE 0 |