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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2016-2023. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#define ERTS_WANT_NFUNC_SCHED_INTERNALS__
#include "global.h"
#include "erl_process.h"
#include "bif.h"
#include "erl_nfunc_sched.h"
#include "erl_trace.h"
#include "jit/beam_asm.h"
ErtsNativeFunc *
erts_new_proc_nfunc(Process *c_p, int argc)
{
ErtsNativeFunc *nep, *old_nep;
size_t size;
size = sizeof(ErtsNativeFunc) + (argc-1)*sizeof(Eterm);
nep = erts_alloc(ERTS_ALC_T_NFUNC_TRAP_WRAPPER, size);
nep->argc = -1; /* unused marker */
nep->argv_size = argc;
old_nep = ERTS_PROC_SET_NFUNC_TRAP_WRAPPER(c_p, nep);
if (old_nep) {
erts_free(ERTS_ALC_T_NFUNC_TRAP_WRAPPER, old_nep);
}
return nep;
}
void
erts_destroy_nfunc(Process *p)
{
ErtsNativeFunc *nep = ERTS_PROC_SET_NFUNC_TRAP_WRAPPER(p, NULL);
if (nep) {
if (nep->m)
erts_nfunc_cleanup_nif_mod(nep);
erts_free(ERTS_ALC_T_NFUNC_TRAP_WRAPPER, nep);
}
}
ErtsNativeFunc *
erts_nfunc_schedule(Process *c_p, Process *dirty_shadow_proc,
const ErtsCodeMFA *mfa, ErtsCodePtr pc,
BeamInstr instr,
void *dfunc, void *ifunc,
Eterm mod, Eterm func,
int argc, const Eterm *argv)
{
Process *used_proc;
ErtsSchedulerData *esdp;
Eterm* reg;
ErtsNativeFunc* nep;
int i;
ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p)
& ERTS_PROC_LOCK_MAIN);
if (dirty_shadow_proc) {
esdp = erts_get_scheduler_data();
ASSERT(esdp && ERTS_SCHEDULER_IS_DIRTY(esdp));
used_proc = dirty_shadow_proc;
}
else {
esdp = erts_proc_sched_data(c_p);
ASSERT(esdp && !ERTS_SCHEDULER_IS_DIRTY(esdp));
used_proc = c_p;
ERTS_VBUMP_ALL_REDS(c_p);
}
reg = esdp->registers->x_reg_array.d;
if (mfa)
nep = erts_get_proc_nfunc(c_p, (int) mfa->arity);
else {
/* If no mfa, this is not the first schedule... */
nep = ERTS_PROC_GET_NFUNC_TRAP_WRAPPER(c_p);
ASSERT(nep && nep->argc >= 0);
}
if (nep->argc < 0) {
/*
* First schedule; save things that might
* need to be restored...
*/
for (i = 0; i < (int) mfa->arity; i++)
nep->argv[i] = reg[i];
nep->pc = pc;
nep->mfa = mfa;
nep->current = c_p->current;
ASSERT(argc >= 0);
nep->argc = (int) mfa->arity;
nep->m = NULL;
ASSERT(!erts_check_nfunc_in_area(c_p,
(char *) nep,
(sizeof(ErtsNativeFunc)
+ (sizeof(Eterm)
*(nep->argc-1)))));
}
/* Copy new arguments into register array if necessary... */
if (reg != argv) {
for (i = 0; i < argc; i++)
reg[i] = argv[i];
}
ASSERT(is_atom(mod) && is_atom(func));
nep->trampoline.info.mfa.module = mod;
nep->trampoline.info.mfa.function = func;
nep->trampoline.info.mfa.arity = (Uint) argc;
nep->trampoline.dfunc = (BeamInstr) dfunc;
nep->func = ifunc;
used_proc->arity = argc;
used_proc->freason = TRAP;
/* call_bif || call_nif */
ERTS_CT_ASSERT(sizeof(nep->trampoline.call_bif_nif) >= sizeof(instr));
sys_memcpy(&nep->trampoline.call_bif_nif, &instr, sizeof(instr));
used_proc->i = (ErtsCodePtr)&nep->trampoline.call_bif_nif;
ASSERT_MFA(erts_code_to_codemfa(used_proc->i));
return nep;
}
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