Log_DebugVarArgs Function

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Header: #include <applibs/log.h>

Logs and formats a debug message with vprintf formatting. This function is thread safe.

The args va_list parameter should be initialized with va_start before this function is called, and should be cleaned up by calling va_end afterwards. The caller needs to provide an additional parameter for every argument specification defined in the fmt string.

int Log_DebugVarArgs(const char * fmt, va_list args);

Parameters

  • fmt The message string to log.

  • args An argument list that has been initialized with va_start.

Errors

Returns -1 if an error is encountered and sets errno to the error value.

  • EFAULT: the fmt is NULL.

Any other errno may also be specified; such errors aren't deterministic and the same behavior might not be retained through system updates.

Return value

Returns 0 for success, or -1 for failure, in which case errno is set to the error value.