[bitbake-devel,7/9] command.py: add new API to get the cpu count on the server

Submitted by Dongxiao Xu on Feb. 23, 2012, 1:47 p.m.

Details

Message ID e5a2915d9483dd4c8b103334380ffa88cbbbb6f7.1330003017.git.dongxiao.xu@intel.com
State New
Headers show

Commit Message

Dongxiao Xu Feb. 23, 2012, 1:47 p.m. 
From: Shane Wang <shane.wang@intel.com>

Add a new API in command.py to get the cpu count in order to set the appropriate default BB_NUMBER_THREADS and PARALLEL_MAKE variables.

Signed-off-by: Shane Wang <shane.wang@intel.com>
---
 lib/bb/command.py |    6 ++++++
 lib/bb/utils.py   |    4 ++++
 2 files changed, 10 insertions(+), 0 deletions(-)

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diff --git a/lib/bb/command.py b/lib/bb/command.py
index 05555c5..43875f7 100644
--- a/lib/bb/command.py
+++ b/lib/bb/command.py
@@ -173,6 +173,12 @@  class CommandsSync:
         """
         command.cooker.reset()
 
+    def getCpuCount(self, command, params):
+        """
+        Get the CPU count on the bitbake server
+        """
+        return bb.utils.cpu_count()
+
 
 class CommandsAsync:
     """
diff --git a/lib/bb/utils.py b/lib/bb/utils.py
index a26635a..d7cefb2 100644
--- a/lib/bb/utils.py
+++ b/lib/bb/utils.py
@@ -25,6 +25,7 @@  import errno
 import logging
 import bb
 import bb.msg
+import multiprocessing
 from commands import getstatusoutput
 from contextlib import contextmanager
 
@@ -862,3 +863,6 @@  def contains(variable, checkvalues, truevalue, falsevalue, d):
     if checkvalues.issubset(val): 
         return truevalue
     return falsevalue
+
+def cpu_count():
+    return multiprocessing.cpu_count()