Clean up dwmblocks-pulse-listener.c

README.md

@@ -1,15 +1,26 @@
 # dwmblocks
-Modular status bar for dwm written in c.
-# usage
+My personal fork of dwmblocks. Original found
+[here](https://github.com/torrinfail/dwmblocks).
+
+Dwmblocks is a modular status bar for dwm written in c.
+
+## Usage
 To use dwmblocks first run 'make' and then install it with 'sudo make install'.
-After that you can put dwmblocks in your xinitrc or other startup script to have it start with dwm.
-# modifying blocks
-The statusbar is made from text output from commandline programs.
-Blocks are added and removed by editing the blocks.h header file.
-By default the blocks.h header file is created the first time you run make which copies the default config from blocks.def.h.
-This is so you can edit your status bar commands and they will not get overwritten in a future update.
-# patches
-Here are some patches to dwmblocks that add features that I either don't want to merge in, or that require a dwm patch to work.
-I do not maintain these but I will take pull requests to update them.
-<br>
-<a href=https://gist.github.com/IGeraGera/e4a5583b91b3eec2e81fdceb44dea717>dwmblocks-statuscmd-b6b0be4.diff</a>
+After that you can put dwmblocks in your xinitrc or other startup script to have
+it start with dwm.
+
+The dwmblocks-pulse-listener program is a small daemon that takes the pid of a
+dwmblocks instance and notifies it of pulse audio volume changes.
+
+## Modifying Blocks
+The status bar is made from text output from command-line programs. Blocks are
+added and removed by editing the blocks.h header file. By default the blocks.h
+header file is created the first time you run make which copies the default
+config from blocks.def.h. This is so you can edit your status bar commands and
+they will not get overwritten in a future update.
+
+## Other Changes
+Note that the intervals listed in blocks.h are in milliseconds (1/1000 second).
+Because of this, the SECONDS() macro is provided for readability. I also
+implemented some changes from Luke Smith's fork found
+[here](https://github.com/LukeSmithxyz/dwmblocks).

dwmblocks-pulse-listener.c

@@ -7,6 +7,14 @@
 
 #define ERROR(...) fprintf(stderr, "error: " __VA_ARGS__)
 
+#ifdef __OpenBSD__
+#define SIGMAX     (SIGUSR2 - 1)
+#define SIGMIN     (SIGUSR1 - 1)
+#else
+#define SIGMAX     SIGRTMAX
+#define SIGMIN     SIGRTMIN
+#endif
+
 typedef struct {
     size_t pid;
     unsigned int signum;
@@ -79,15 +87,15 @@ int main(int argc, const char **argv) {
         return 1;
     }
     char *endptr = NULL;
-    unsigned int signum = SIGRTMIN + 1;
+    unsigned int signum = SIGMIN + 1;
     if (argc >= 3 && argv[1][0] == '-') {
         const char *signumstr = argv[1] + 1;
         unsigned long num = strtoul(signumstr, &endptr, 10);
-        if (num > (SIGRTMAX - SIGRTMIN) + 1) {
+        if (num > SIGMAX - SIGMIN) {
             ERROR("signal out of range: %lu\n", num);
             return 1;
         }
-        signum = SIGRTMIN + num;
+        signum = SIGMIN + num;
         ++argv;
     }
     endptr = NULL;

dwmblocks.c

@@ -9,8 +9,8 @@
 #include<X11/Xlib.h>
 #endif
 #ifdef __OpenBSD__
-#define SIGPLUS      SIGUSR1+1
-#define SIGMINUS     SIGUSR1-1
+#define SIGPLUS      (SIGUSR1 + 1)
+#define SIGMINUS     (SIGUSR1 - 1)
 #else
 #define SIGPLUS      SIGRTMIN
 #define SIGMINUS     SIGRTMIN