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31 lines
584 B
C
31 lines
584 B
C
static int dwmblockssig;
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pid_t dwmblockspid = 0;
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int
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getdwmblockspid()
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{
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char buf[16];
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FILE *fp = popen("pidof -s dwmblocks", "r");
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if (fgets(buf, sizeof(buf), fp));
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pid_t pid = strtoul(buf, NULL, 10);
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pclose(fp);
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dwmblockspid = pid;
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return pid != 0 ? 0 : -1;
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}
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void
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sigdwmblocks(const Arg *arg)
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{
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union sigval sv;
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sv.sival_int = (dwmblockssig << 8) | arg->i;
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if (!dwmblockspid)
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if (getdwmblockspid() == -1)
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return;
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if (sigqueue(dwmblockspid, SIGUSR1, sv) == -1) {
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if (errno == ESRCH) {
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if (!getdwmblockspid())
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sigqueue(dwmblockspid, SIGUSR1, sv);
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}
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}
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} |