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perl 3.0 patch #32 patch #29, continued
See patch #29.
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Larry Wall
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Oct 16, 1990
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| #!/usr/bin/perl | ||
| eval 'exec /usr/bin/perl -S $0 ${1+"$@"}' | ||
| if 0; | ||
|
|
||
| require 'sys/ipc.ph'; | ||
| require 'sys/msg.ph'; | ||
|
|
||
| $| = 1; | ||
|
|
||
| $mode = shift; | ||
| die "usage: ipcmsg {r|s}\n" unless $mode =~ /^[rs]$/; | ||
| $send = ($mode eq "s"); | ||
|
|
||
| $id = msgget(0x1234, ($send ? 0 : &IPC_CREAT) | 0644); | ||
| die "Can't get message queue: $!\n" unless defined($id); | ||
| print "message queue id: $id\n"; | ||
|
|
||
| if ($send) { | ||
| while (<STDIN>) { | ||
| chop; | ||
| unless (msgsnd($id, pack("LA*", $., $_), 0)) { | ||
| die "Can't send message: $!\n"; | ||
| } | ||
| } | ||
| } | ||
| else { | ||
| $SIG{'INT'} = $SIG{'QUIT'} = "leave"; | ||
| for (;;) { | ||
| unless (msgrcv($id, $_, 512, 0, 0)) { | ||
| die "Can't receive message: $!\n"; | ||
| } | ||
| ($type, $message) = unpack("La*", $_); | ||
| printf "[%d] %s\n", $type, $message; | ||
| } | ||
| } | ||
|
|
||
| &leave; | ||
|
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||
| sub leave { | ||
| if (!$send) { | ||
| $x = msgctl($id, &IPC_RMID, 0); | ||
| if (!defined($x) || $x < 0) { | ||
| die "Can't remove message queue: $!\n"; | ||
| } | ||
| } | ||
| exit; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| #!/usr/bin/perl | ||
| eval 'exec /usr/bin/perl -S $0 ${1+"$@"}' | ||
| if 0; | ||
|
|
||
| require 'sys/ipc.ph'; | ||
| require 'sys/msg.ph'; | ||
|
|
||
| $| = 1; | ||
|
|
||
| $mode = shift; | ||
| die "usage: ipcmsg {r|s}\n" unless $mode =~ /^[rs]$/; | ||
| $signal = ($mode eq "s"); | ||
|
|
||
| $id = semget(0x1234, 1, ($signal ? 0 : &IPC_CREAT) | 0644); | ||
| die "Can't get semaphore: $!\n" unless defined($id); | ||
| print "semaphore id: $id\n"; | ||
|
|
||
| if ($signal) { | ||
| while (<STDIN>) { | ||
| print "Signalling\n"; | ||
| unless (semop($id, 0, pack("sss", 0, 1, 0))) { | ||
| die "Can't signal semaphore: $!\n"; | ||
| } | ||
| } | ||
| } | ||
| else { | ||
| $SIG{'INT'} = $SIG{'QUIT'} = "leave"; | ||
| for (;;) { | ||
| unless (semop($id, 0, pack("sss", 0, -1, 0))) { | ||
| die "Can't wait for semaphore: $!\n"; | ||
| } | ||
| print "Unblocked\n"; | ||
| } | ||
| } | ||
|
|
||
| &leave; | ||
|
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||
| sub leave { | ||
| if (!$signal) { | ||
| $x = semctl($id, 0, &IPC_RMID, 0); | ||
| if (!defined($x) || $x < 0) { | ||
| die "Can't remove semaphore: $!\n"; | ||
| } | ||
| } | ||
| exit; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| #!/usr/bin/perl | ||
| eval 'exec /usr/bin/perl -S $0 ${1+"$@"}' | ||
| if 0; | ||
|
|
||
| require 'sys/ipc.ph'; | ||
| require 'sys/shm.ph'; | ||
|
|
||
| $| = 1; | ||
|
|
||
| $mode = shift; | ||
| die "usage: ipcshm {r|s}\n" unless $mode =~ /^[rs]$/; | ||
| $send = ($mode eq "s"); | ||
|
|
||
| $SIZE = 32; | ||
| $id = shmget(0x1234, $SIZE, ($send ? 0 : &IPC_CREAT) | 0644); | ||
| die "Can't get message queue: $!\n" unless defined($id); | ||
| print "message queue id: $id\n"; | ||
|
|
||
| if ($send) { | ||
| while (<STDIN>) { | ||
| chop; | ||
| unless (shmwrite($id, pack("La*", length($_), $_), 0, $SIZE)) { | ||
| die "Can't write to shared memory: $!\n"; | ||
| } | ||
| } | ||
| } | ||
| else { | ||
| $SIG{'INT'} = $SIG{'QUIT'} = "leave"; | ||
| for (;;) { | ||
| $_ = <STDIN>; | ||
| unless (shmread($id, $_, 0, $SIZE)) { | ||
| die "Can't read shared memory: $!\n"; | ||
| } | ||
| $len = unpack("L", $_); | ||
| $message = substr($_, length(pack("L",0)), $len); | ||
| printf "[%d] %s\n", $len, $message; | ||
| } | ||
| } | ||
|
|
||
| &leave; | ||
|
|
||
| sub leave { | ||
| if (!$send) { | ||
| $x = shmctl($id, &IPC_RMID, 0); | ||
| if (!defined($x) || $x < 0) { | ||
| die "Can't remove shared memory: $!\n"; | ||
| } | ||
| } | ||
| exit; | ||
| } |
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