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authorZandra Hird <[email protected]>2015-02-23 11:36:09 +0100
committerZandra Hird <[email protected]>2015-02-23 11:36:44 +0100
commitd1aeabb317811c203c08194c3dab464a48ec1dd3 (patch)
tree860440da6f1c765b7cda8e729ac24b73df61295b /erts/emulator/hipe/hipe_perfctr.c
parent32b790573fe3cc9ba3f9b0d66e1832f36094034b (diff)
parentcfa9229ba1eb8851caecfc92ca1bc9813fb1d567 (diff)
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Merge branch 'mikpe/remove-perfctr-support'
* mikpe/remove-perfctr-support: remove perfctr support OTP-12508
Diffstat (limited to 'erts/emulator/hipe/hipe_perfctr.c')
-rw-r--r--erts/emulator/hipe/hipe_perfctr.c229
1 files changed, 0 insertions, 229 deletions
diff --git a/erts/emulator/hipe/hipe_perfctr.c b/erts/emulator/hipe/hipe_perfctr.c
deleted file mode 100644
index 371b3fb097..0000000000
--- a/erts/emulator/hipe/hipe_perfctr.c
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2004-2011. All Rights Reserved.
- *
- * The contents of this file are subject to the Erlang Public License,
- * Version 1.1, (the "License"); you may not use this file except in
- * compliance with the License. You should have received a copy of the
- * Erlang Public License along with this software. If not, it can be
- * retrieved online at http://www.erlang.org/.
- *
- * Software distributed under the License is distributed on an "AS IS"
- * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
- * the License for the specific language governing rights and limitations
- * under the License.
- *
- * %CopyrightEnd%
- */
-
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include "sys.h"
-#include "error.h"
-#include "global.h"
-#include "bif.h"
-#include "big.h"
-#include "erl_binary.h"
-#include "hipe_perfctr.h"
-#include "libperfctr.h"
-
-static struct vperfctr *vperfctr;
-static unsigned int have_rdtsc;
-static double tsc_to_ms;
-static unsigned int tsc_on; /* control calls must set tsc_on if have_rdtsc is true */
-static unsigned int nractrs;
-static unsigned int users;
-#define USER_BIFS (1<<0)
-#define USER_HRVTIME (1<<1)
-
-static int hipe_perfctr_open(unsigned int user)
-{
- struct perfctr_info info;
-
- if (!vperfctr) {
- vperfctr = vperfctr_open();
- if (!vperfctr)
- return -1;
- if (vperfctr_info(vperfctr, &info) >= 0) {
- tsc_to_ms = (double)(info.tsc_to_cpu_mult ? : 1) / (double)info.cpu_khz;
- have_rdtsc = (info.cpu_features & PERFCTR_FEATURE_RDTSC) ? 1 : 0;
- }
- tsc_on = 0;
- nractrs = 0;
- }
- users |= user;
- return 0;
-}
-
-static void hipe_perfctr_reset(void)
-{
- struct vperfctr_control control;
-
- memset(&control, 0, sizeof control);
- if (have_rdtsc)
- control.cpu_control.tsc_on = 1;
- nractrs = 0;
- if (vperfctr_control(vperfctr, &control) >= 0)
- tsc_on = 1;
-}
-
-static void hipe_perfctr_close(unsigned int user)
-{
- if (!vperfctr)
- return;
- users &= ~user;
- switch (users) {
- case 0:
- vperfctr_unlink(vperfctr);
- vperfctr_close(vperfctr);
- vperfctr = NULL;
- tsc_on = 0;
- nractrs = 0;
- break;
- case USER_HRVTIME:
- hipe_perfctr_reset();
- }
-}
-
-/*
- * Interface for HiPE's hrvtime code.
- */
-
-int hipe_perfctr_hrvtime_open(void)
-{
- if (hipe_perfctr_open(USER_HRVTIME) < 0)
- return -1;
- if (have_rdtsc) {
- if (!tsc_on)
- hipe_perfctr_reset(); /* note: updates tsc_on */
- if (tsc_on)
- return 0;
- }
- hipe_perfctr_hrvtime_close();
- return -1;
-}
-
-void hipe_perfctr_hrvtime_close(void)
-{
- hipe_perfctr_close(USER_HRVTIME);
-}
-
-double hipe_perfctr_hrvtime_get(void)
-{
- return (double)vperfctr_read_tsc(vperfctr) * tsc_to_ms;
-}
-
-/*
- * BIF interface for user-programmable performance counters.
- */
-
-BIF_RETTYPE hipe_bifs_vperfctr_open_0(BIF_ALIST_0)
-{
- if (hipe_perfctr_open(USER_BIFS) < 0)
- BIF_RET(am_false); /* arity 0 BIFs can't fail :-( */
- BIF_RET(am_true);
-}
-
-BIF_RETTYPE hipe_bifs_vperfctr_close_0(BIF_ALIST_0)
-{
- hipe_perfctr_close(USER_BIFS);
- BIF_RET(NIL);
-}
-
-static Eterm ull_to_integer(unsigned long long x, Process *p)
-{
- unsigned long long tmpx;
- unsigned int ds, i;
- size_t sz;
- Eterm *hp;
- ErtsDigit *xp;
-
- if (x <= (unsigned long long)MAX_SMALL)
- return make_small(x);
-
- /* Calculate number of digits. */
- ds = 0;
- tmpx = x;
- do {
- ++ds;
- tmpx = (tmpx >> (D_EXP / 2)) >> (D_EXP / 2);
- } while (tmpx != 0);
-
- sz = BIG_NEED_SIZE(ds); /* number of words including arity */
- hp = HAlloc(p, sz);
- *hp = make_pos_bignum_header(sz-1);
-
- xp = (ErtsDigit*)(hp+1);
- i = 0;
- do {
- xp[i++] = (ErtsDigit)x;
- x = (x >> (D_EXP / 2)) >> (D_EXP / 2);
- } while (i < ds);
- while (i & (BIG_DIGITS_PER_WORD-1))
- xp[i++] = 0;
-
- return make_big(hp);
-}
-
-BIF_RETTYPE hipe_bifs_vperfctr_info_0(BIF_ALIST_0)
-{
- struct perfctr_info info;
-
- if (!vperfctr || vperfctr_info(vperfctr, &info) < 0)
- BIF_RET(am_false); /* arity 0 BIFs can't fail :-( */
- BIF_RET(new_binary(BIF_P, (void*)&info, sizeof info));
-}
-
-BIF_RETTYPE hipe_bifs_vperfctr_read_tsc_0(BIF_ALIST_0)
-{
- unsigned long long val;
-
- if (!vperfctr || !tsc_on)
- BIF_RET(am_false); /* arity 0 BIFs can't fail :-( */
- val = vperfctr_read_tsc(vperfctr);
- BIF_RET(ull_to_integer(val, BIF_P));
-}
-
-BIF_RETTYPE hipe_bifs_vperfctr_read_pmc_1(BIF_ALIST_1)
-{
- Uint pmc;
- unsigned long long val;
-
- if (!vperfctr ||
- is_not_small(BIF_ARG_1) ||
- (pmc = unsigned_val(BIF_ARG_1), pmc >= nractrs))
- BIF_RET(am_false); /* for consistency with the arity 0 BIFs */
- val = vperfctr_read_pmc(vperfctr, pmc);
- BIF_RET(ull_to_integer(val, BIF_P));
-}
-
-BIF_RETTYPE hipe_bifs_vperfctr_control_1(BIF_ALIST_1)
-{
- void *bytes;
- struct vperfctr_control control;
- Uint bitoffs;
- Uint bitsize;
-
- if (!vperfctr)
- BIF_ERROR(BIF_P, BADARG);
- if (is_not_binary(BIF_ARG_1))
- BIF_ERROR(BIF_P, BADARG);
- if (binary_size(BIF_ARG_1) != sizeof control)
- BIF_ERROR(BIF_P, BADARG);
- ERTS_GET_BINARY_BYTES(BIF_ARG_1, bytes, bitoffs, bitsize);
- ASSERT(bitoffs == 0);
- ASSERT(bitsize == 0);
- memcpy(&control, bytes, sizeof control);
- if (have_rdtsc)
- control.cpu_control.tsc_on = 1;
- if (vperfctr_control(vperfctr, &control) < 0) {
- hipe_perfctr_reset();
- BIF_ERROR(BIF_P, BADARG);
- }
- tsc_on = control.cpu_control.tsc_on;
- nractrs = control.cpu_control.nractrs;
- BIF_RET(NIL);
-}