ACE (1): use ACE Log facility

1. Preface:

The main macros for using ace log facilities are as follows:

Ace_debug (commonly used): used for debugging statements

Ace_error (commonly used): used for warning and error

Ace_trace: used for tracking information

2. Create a console project log_text (vs2008)

4. Modify the log_text.cpp File

// Log_text.cpp: defines the entry point of the console application. <Br/> // </P> <p> # include "stdafx. H "</P> <p> # define ace_ntrace 0 // whether macro ace_trace 0 is enabled, 1 is disabled, disabled by default <br/> # include "ACE/log_msg.h" </P> <p> void Foo (void); </P> <p> int ace_tmain (INT, ace_tchar * []) <br/>{< br/> ace_trace (ace_text ("Main"); <br/> ace_debug (lm_info, ace_text ("% t Hi Mom! /N "); <br/> Foo (); <br/> ace_debug (lm_info, ace_text (" % I Howdy Pardner/N "))); <br/> system ("pause"); <br/> return 0; <br/>}</P> <p> void Foo (void) <br/>{< br/> ace_trace (ace_text ("foo"); <br/> ace_debug (lm_info, ace_text ("% I Howdy Pardner/N"); <br/>}

Running result:

5. If you want to run in vs2008, you must modify the project properties:

Right-click Project-> Properties

(1) C/C ++ attributes

General -- add the include directory: $ (ace_root)

Code Generation: multi-thread debugging DLL (MDD)

(2) linker

General -- Additional library Directory: $ (ace_root)/lib

Input -- add dependency: aced. Lib

Advanced -- random base address: Disable image randomization

Advanced -- Data Execution Protection: Default Value

6. computer environment variables

Add ace_root and set its value to: D:/ace_5.6/ace_wrappers.

Add D:/ace_5.6/ace_wrappers/bin and D:/ace_5.6 to the path variable.

7. compile the project

8. Execute log_text.exe in the console and output:

If # define ace_ntrace 0 is not added to the project, the running result is:
Hi mom
Howdy Pardner
Goodnight

Ace_trace does not work. Check the book and find that this function is disabled by default. solution:

You can use either of the following methods to solve the problem:
(1) modify the file code
# Define ace_ntrace 0
# Include "ACE/log_msg.h"

Note that # define ace_ntrace 0 must be in # include "ACE/log_msg.h"; otherwise, ace_trace will not work.

(2) Add the definition macro command on the Compilation command.
You can add the following option-dace_ntrace

Summary:

1. # include "ACE/log_msg.h" contains many macros, including a large number of debugging macros such as ace_debug, which makes programming easier.

2. ace_log _ MSG: Process --- obtain or set the mask of the Process range, which affects the log severity of the ace_log_msg instance. ace_log_msg: thread -- specifies the thread proprietary mask, this second parameter is very important if you want to set an individual severity mask on the ace_log_msg instance.

Reference: http://blog.csdn.net/sws9999/archive/2010/10/14/5940423.aspx