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// <ORIGINAL-AUTHOR>: Greg Lueck
// <COMPONENT>: barecrt
// <FILE-TYPE>: component public header

#ifndef BARECRT_PROCESS_HPP
#define BARECRT_PROCESS_HPP

#include "fund.hpp"
#include "barecrt/time.hpp"
#include "barecrt/types.hpp"

#if defined(FUND_HOST_IA32_LINUX)
#   include "barecrt/linux-ia32/resource.hpp"
#elif defined(FUND_HOST_INTEL64_LINUX) || defined(FUND_HOST_MIC_LINUX)
#   include "barecrt/linux-intel64/resource.hpp"
#elif defined(FUND_HOST_IA64_LINUX)
#   include "barecrt/linux-ia64/resource.hpp"
#elif defined(FUND_HOST_IA32_MAC)
#   include "barecrt/mac-ia32/resource.hpp"
#elif defined(FUND_HOST_INTEL64_MAC)
#   include "barecrt/mac-intel64/resource.hpp"
#elif defined(FUND_HOST_INTEL64_BSD)
#   include "barecrt/bsd-intel64/resource.hpp"
#else
#   error "Must define O/S and architecture"
#endif


namespace BARECRT {

/*!
 * Get the caller's process ID.
 *
 *  @param[out] pid     Receives the ID.
 *
 * @return  0 on success, else a kernel error number.
 */
ECODE GetPid(PID *pid);

/*!
 * Get the caller's real user ID.
 *
 *  @param[out] uid     Receives the ID.
 *
 * @return  0 on success, else a kernel error number.
 */
ECODE GetUid(UID *pid);

/*!
 * Get the caller's thread ID.
 *
 *  @param[out] tid     Receives the ID.
 *
 * @return  0 on success, else a kernel error number.
 */
ECODE GetTid(PID *tid);

/*!
 * Get a resource limit for the calling process.
 *
 *  @param[in] resource     The resource limit to get.
 *  @param[out] limit       On success, receives the limit.
 *
 * @return  0 on success, else a kernel error number.
 */
ECODE GetRLimit(RESOURCE resource, RLIMIT *limit);

/*!
 * Set a resource limit for the calling process.
 *
 *  @param[in] resource     The resource limit to set.
 *  @param[in] limit        The limit.
 *
 * @return  0 on success, else a kernel error number.
 */
ECODE SetRLimit(RESOURCE resource, const RLIMIT *limit);

/*!
 * Yield the processor.
 *
 * @return  0 on success, else a kernel error number.
 */
ECODE Yield();

/*!
 * Get the current wall-clock time since some arbitrary reference point
 * that occured at (or before) the start of the calling process.
 *
 *  @param[out] timeval     Receives the current time.
 *
 * @return  0 on success, else a kernel error number.
 */
ECODE GetTime(TIMEVAL *timeval);

} // namespace
#endif // file guard
