Logging function may infinitely recursively calls itself on Windows Mobile (thanks Emil Sturniolo for the report)

[bennylp]

The pj_log() function, the main implementation of logging functionality in PJLIB, calls some other PJLIB APIs such as pj_gettimeofday(). The implementation of these other APIs may in turn call back the pj_log() function, causing infinite recursive calls.

This happens especially on Windows Mobile platform where PJLIB emulates the millisecond resolution of the time function (this feature was added in version 1.2 by ticket #764), depending on the timing when the logging was called.

The corresponding ticket for 1.0 branch is ticket #932

[bennylp]

In r2853:

• Added feature to temporarily suspend the logging facility while we're in the pj_log() function. The suspension will be thread specific if the platform supports it.

[nanang]

In r2868:

• Fixed logging for non-multithreading platforms.

[nanang]

Replying to nanang:

In r2868:

• Fixed logging for non-multithreading platforms.

Details:

• fixed bug in logging suspension status check.
• fixed suspend_logging() in storing current pj_log_max_level (should be before setting it to 0).