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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1996-2016. 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%
*/
#ifndef __LTTNG_WRAPPER_H__
#define __LTTNG_WRAPPER_H__
#ifdef USE_LTTNG
#include "erlang_lttng.h"
#define USE_LTTNG_VM_TRACEPOINTS
#define LTTNG_BUFFER_SZ (256)
#define LTTNG_PROC_BUFFER_SZ (16)
#define LTTNG_PORT_BUFFER_SZ (20)
#define LTTNG_MFA_BUFFER_SZ (256)
#define lttng_decl_procbuf(Name) \
char Name[LTTNG_PROC_BUFFER_SZ]
#define lttng_decl_portbuf(Name) \
char Name[LTTNG_PORT_BUFFER_SZ]
#define lttng_decl_mfabuf(Name) \
char Name[LTTNG_MFA_BUFFER_SZ]
#define lttng_decl_carrier_stats(Name) \
lttng_carrier_stats_t Name##_STATSTRUCT, *Name = &Name##_STATSTRUCT
#define lttng_pid_to_str(pid, name) \
erts_snprintf(name, LTTNG_PROC_BUFFER_SZ, "%T", (pid))
#define lttng_portid_to_str(pid, name) \
erts_snprintf(name, LTTNG_PORT_BUFFER_SZ, "%T", (pid))
#define lttng_proc_to_str(p, name) \
lttng_pid_to_str(((p) ? (p)->common.id : ERTS_INVALID_PID), name)
#define lttng_port_to_str(p, name) \
lttng_portid_to_str(((p) ? (p)->common.id : ERTS_INVALID_PORT), name)
#define lttng_mfa_to_str(m,f,a, Name) \
erts_snprintf(Name, LTTNG_MFA_BUFFER_SZ, "%T:%T/%lu", (Eterm)(m), (Eterm)(f), (Uint)(a))
#define lttng_proc_to_mfa_str(p, Name) \
do { \
if (ERTS_PROC_IS_EXITING((p))) { \
strcpy(Name, "<exiting>"); \
} else { \
BeamInstr *_fptr = find_function_from_pc((p)->i); \
if (_fptr) { \
lttng_mfa_to_str(_fptr[0],_fptr[1],_fptr[2], Name); \
} else { \
strcpy(Name, "<unknown>"); \
} \
} \
} while(0)
/* ErtsRunQueue->ErtsSchedulerData->Uint */
#define lttng_rq_to_id(RQ) \
(RQ)->scheduler->no
#define LTTNG_ENABLED(Name) \
tracepoint_enabled(org_erlang_otp, Name)
/* include a special LTTNG_DO for do_tracepoint ? */
#define LTTNG1(Name, Arg1) \
tracepoint(org_erlang_otp, Name, (Arg1))
#define LTTNG2(Name, Arg1, Arg2) \
tracepoint(org_erlang_otp, Name, (Arg1), (Arg2))
#define LTTNG3(Name, Arg1, Arg2, Arg3) \
tracepoint(org_erlang_otp, Name, (Arg1), (Arg2), (Arg3))
#define LTTNG4(Name, Arg1, Arg2, Arg3, Arg4) \
tracepoint(org_erlang_otp, Name, (Arg1), (Arg2), (Arg3), (Arg4))
#define LTTNG5(Name, Arg1, Arg2, Arg3, Arg4, Arg5) \
tracepoint(org_erlang_otp, Name, (Arg1), (Arg2), (Arg3), (Arg4), (Arg5))
#else /* USE_LTTNG */
#define LTTNG1(Name, Arg1) do {} while(0)
#define LTTNG2(Name, Arg1, Arg2) do {} while(0)
#define LTTNG3(Name, Arg1, Arg2, Arg3) do {} while(0)
#define LTTNG4(Name, Arg1, Arg2, Arg3, Arg4) do {} while(0)
#define LTTNG5(Name, Arg1, Arg2, Arg3, Arg4, Arg5) do {} while(0)
#endif /* USE_LTTNG */
#endif /* __LTTNG_WRAPPER_H__ */
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