Add solaris_worker_pids

Author: Dan Hawker

lib/resque/worker.rb

@@ -302,7 +302,7 @@ def kill_child
     def paused?
       @paused
     end
-    
+
     # Stop processing jobs after the current one has completed (if we're
     # currently running one).
     def pause_processing
@@ -473,14 +473,40 @@ def pid
       @pid ||= to_s.split(":")[1].to_i
     end
 
-    # Returns an array of string pids of all the other workers on this
+    # Returns an Array of string pids of all the other workers on this
     # machine. Useful when pruning dead workers on startup.
     def worker_pids
+      if RUBY_PLATFORM =~ /solaris/
+        solaris_worker_pids
+      else
+        linux_worker_pids
+      end
+    end
+
+    # Find Resque worker pids on Linux and OS X.
+    #
+    # Returns an Array of string pids of all the other workers on this
+    # machine. Useful when pruning dead workers on startup.
+    def linux_worker_pids
       `ps -A -o pid,command | grep [r]esque | grep -v "resque-web"`.split("\n").map do |line|
         line.split(' ')[0]
       end
     end
 
+    # Find Resque worker pids on Solaris.
+    #
+    # Returns an Array of string pids of all the other workers on this
+    # machine. Useful when pruning dead workers on startup.
+    def solaris_worker_pids
+      `ps -A -o pid,comm | grep ruby | grep -v grep | grep -v "resque-web"`.split("\n").map do |line|
+        real_pid = line.split(' ')[0]
+        pargs_command = `pargs -a #{real_pid} 2>/dev/null | grep [r]esque | grep -v "resque-web"`
+        if pargs_command.split(':')[1] == " resque-#{Resque::Version}"
+          real_pid
+        end
+      end.compact
+    end
+
     # Given a string, sets the procline ($0) and logs.
     # Procline is always in the format of:
     #   resque-VERSION: STRING