Mercurial > sdl-ios-xcode
view include/SDL_power.h @ 3287:77f2f10b81a7
Fixed bug #570
SDL_SemWaitTimeout in src/thread/generic/SDL_syssem.c line 179 (SVN trunk):
--sem->count;
should be
if (retval == 0) {
--sem->count;
}
Without this, sem->count will underflow on timeout effectively breaking the
semaphore. It appears that the implementation has been wrong since the initial
revision.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 21 Sep 2009 07:35:06 +0000 |
parents | b7a48f533966 |
children | d3baf5ac4e37 |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #ifndef _SDL_power_h #define _SDL_power_h /** * \file SDL_power.h * * Header for the SDL power management routines */ #include "SDL_stdinc.h" #include "begin_code.h" /* Set up for C function definitions, even when using C++ */ #ifdef __cplusplus /* *INDENT-OFF* */ extern "C" { /* *INDENT-ON* */ #endif /** * \enum SDL_PowerState * * \brief The basic state for the system's power supply. */ typedef enum { SDL_POWERSTATE_UNKNOWN, /**< cannot determine power status */ SDL_POWERSTATE_ON_BATTERY, /**< Not plugged in, running on the battery */ SDL_POWERSTATE_NO_BATTERY, /**< Plugged in, no battery available */ SDL_POWERSTATE_CHARGING, /**< Plugged in, charging battery */ SDL_POWERSTATE_CHARGED, /**< Plugged in, battery charged */ } SDL_PowerState; /** * \fn int SDL_GetPowerInfo(void) * * \brief Get the current power supply details. * * \param secs Seconds of battery life left. You can pass a NULL here if * you don't care. Will return -1 if we can't determine a * value, or we're not running on a battery. * * \param pct Percentage of battery life left, between 0 and 100. You can * pass a NULL here if you don't care. Will return -1 if we * can't determine a value, or we're not running on a battery. * * \return The state of the battery (if any). */ extern DECLSPEC SDL_PowerState SDLCALL SDL_GetPowerInfo(int *secs, int *pct); /* Ends C function definitions when using C++ */ #ifdef __cplusplus /* *INDENT-OFF* */ } /* *INDENT-ON* */ #endif #include "close_code.h" #endif /* _SDL_power_h */ /* vi: set ts=4 sw=4 expandtab: */