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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team 1998-2009
*
* External API for the scheduler. For most uses, the functions in
* RtsAPI.h should be enough.
*
* Do not #include this file directly: #include "Rts.h" instead.
*
* To understand the structure of the RTS headers, see the wiki:
* http://ghc.haskell.org/trac/ghc/wiki/Commentary/SourceTree/Includes
*
* ---------------------------------------------------------------------------*/
#ifndef RTS_THREADS_H
#define RTS_THREADS_H
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
//
// Creating threads
//
StgTSO *createThread (Capability *cap, W_ stack_size);
void scheduleWaitThread (/* in */ StgTSO *tso,
/* out */ HaskellObj* ret,
/* inout */ Capability **cap);
StgTSO *createGenThread (Capability *cap, W_ stack_size,
StgClosure *closure);
StgTSO *createIOThread (Capability *cap, W_ stack_size,
StgClosure *closure);
StgTSO *createStrictIOThread (Capability *cap, W_ stack_size,
StgClosure *closure);
// Suspending/resuming threads around foreign calls
void * suspendThread (StgRegTable *, bool interruptible);
StgRegTable * resumeThread (void *);
//
// Thread operations from Threads.c
//
int cmp_thread (StgPtr tso1, StgPtr tso2);
int rts_getThreadId (StgPtr tso);
HsInt64 rts_getThreadAllocationCounter (StgPtr tso);
void rts_setThreadAllocationCounter (StgPtr tso, HsInt64 i);
void rts_enableThreadAllocationLimit (StgPtr tso);
void rts_disableThreadAllocationLimit (StgPtr tso);
#if !defined(mingw32_HOST_OS)
pid_t forkProcess (HsStablePtr *entry);
#else
pid_t forkProcess (HsStablePtr *entry)
GNU_ATTRIBUTE(__noreturn__);
#endif
HsBool rtsSupportsBoundThreads (void);
// The number of Capabilities.
// ToDo: I would like this to be private to the RTS and instead expose a
// function getNumCapabilities(), but it is used in compiler/cbits/genSym.c
extern unsigned int n_capabilities;
// The number of Capabilities that are not disabled
extern uint32_t enabled_capabilities;
#if !IN_STG_CODE
extern Capability MainCapability;
#endif
//
// Change the number of capabilities (only supports increasing the
// current value at the moment).
//
extern void setNumCapabilities (uint32_t new_);
#endif /* RTS_THREADS_H */
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