// SPDX-License-Identifier: GPL-2.0#include "util/cputopo.h"#include "util/debug.h"#include "util/expr.h"#include "util/hashmap.h"#include "util/header.h"#include "util/smt.h"#include "tests.h"#include <math.h>#include <stdlib.h>#include <string.h>#include <string2.h>#include <linux/zalloc.h> static int test_ids_union(void){	struct hashmap *ids1, *ids2; 	/* Empty union. */	ids1 = ids__new();	TEST_ASSERT_VAL("ids__new", ids1);	ids2 = ids__new();	TEST_ASSERT_VAL("ids__new", ids2); 	ids1 = ids__union(ids1, ids2);	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 0); 	/* Union {foo, bar} against {}. */	ids2 = ids__new();	TEST_ASSERT_VAL("ids__new", ids2); 	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("foo")), 0);	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("bar")), 0); 	ids1 = ids__union(ids1, ids2);	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2); 	/* Union {foo, bar} against {foo}. */	ids2 = ids__new();	TEST_ASSERT_VAL("ids__new", ids2);	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("foo")), 0); 	ids1 = ids__union(ids1, ids2);	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2); 	/* Union {foo, bar} against {bar,baz}. */	ids2 = ids__new();	TEST_ASSERT_VAL("ids__new", ids2);	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("bar")), 0);	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("baz")), 0); 	ids1 = ids__union(ids1, ids2);	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 3); 	ids__free(ids1); 	return 0;} static int test(struct expr_parse_ctx *ctx, const char *e, double val2){	double val; 	if (expr__parse(&val, ctx, e))		TEST_ASSERT_VAL("parse test failed", 0);	TEST_ASSERT_VAL("unexpected value", val == val2);	return 0;} static int test__expr(struct test_suite *t __maybe_unused, int subtest __maybe_unused){	struct expr_id_data *val_ptr;	const char *p;	double val, num_cpus_online, num_cpus, num_cores, num_dies, num_packages;	int ret;	struct expr_parse_ctx *ctx;	bool is_intel = false;	char strcmp_cpuid_buf[256];	struct perf_pmu *pmu = perf_pmus__find_core_pmu();	char *cpuid = perf_pmu__getcpuid(pmu);	char *escaped_cpuid1, *escaped_cpuid2; 	TEST_ASSERT_VAL("get_cpuid", cpuid);	is_intel = strstr(cpuid, "Intel") != NULL; 	TEST_ASSERT_EQUAL("ids_union", test_ids_union(), 0); 	ctx = expr__ctx_new();	TEST_ASSERT_VAL("expr__ctx_new", ctx);	expr__add_id_val(ctx, strdup("FOO"), 1);	expr__add_id_val(ctx, strdup("BAR"), 2); 	ret = test(ctx, "1+1", 2);	ret |= test(ctx, "FOO+BAR", 3);	ret |= test(ctx, "(BAR/2)%2", 1);	ret |= test(ctx, "1 - -4",  5);	ret |= test(ctx, "(FOO-1)*2 + (BAR/2)%2 - -4",  5);	ret |= test(ctx, "1-1 | 1", 1);	ret |= test(ctx, "1-1 & 1", 0);	ret |= test(ctx, "min(1,2) + 1", 2);	ret |= test(ctx, "max(1,2) + 1", 3);	ret |= test(ctx, "1+1 if 3*4 else 0", 2);	ret |= test(ctx, "100 if 1 else 200 if 1 else 300", 100);	ret |= test(ctx, "100 if 0 else 200 if 1 else 300", 200);	ret |= test(ctx, "100 if 1 else 200 if 0 else 300", 100);	ret |= test(ctx, "100 if 0 else 200 if 0 else 300", 300);	ret |= test(ctx, "1.1 + 2.1", 3.2);	ret |= test(ctx, ".1 + 2.", 2.1);	ret |= test(ctx, "d_ratio(1, 2)", 0.5);	ret |= test(ctx, "d_ratio(2.5, 0)", 0);	ret |= test(ctx, "1.1 < 2.2", 1);	ret |= test(ctx, "2.2 > 1.1", 1);	ret |= test(ctx, "1.1 < 1.1", 0);	ret |= test(ctx, "2.2 > 2.2", 0);	ret |= test(ctx, "2.2 < 1.1", 0);	ret |= test(ctx, "1.1 > 2.2", 0);	ret |= test(ctx, "1.1e10 < 1.1e100", 1);	ret |= test(ctx, "1.1e2 > 1.1e-2", 1); 	if (ret) {		expr__ctx_free(ctx);		return ret;	} 	p = "FOO/0";	ret = expr__parse(&val, ctx, p);	TEST_ASSERT_VAL("division by zero", ret == 0);	TEST_ASSERT_VAL("division by zero", isnan(val)); 	p = "BAR/";	ret = expr__parse(&val, ctx, p);	TEST_ASSERT_VAL("missing operand", ret == -1); 	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("FOO + BAR + BAZ + BOZO", "FOO",					ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 3);	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BAR", &val_ptr));	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BAZ", &val_ptr));	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "BOZO", &val_ptr)); 	expr__ctx_clear(ctx);	ctx->sctx.runtime = 3;	TEST_ASSERT_VAL("find ids",			expr__find_ids("EVENT1\\,param\\=?@ + EVENT2\\,param\\=?@",					NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 2);	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT1,param=3@", &val_ptr));	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT2,param=3@", &val_ptr)); 	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("dash\\-event1 - dash\\-event2",				       NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 2);	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "dash-event1", &val_ptr));	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "dash-event2", &val_ptr)); 	/* Only EVENT1 or EVENT2 need be measured depending on the value of smt_on. */	{		bool smton = smt_on();		bool corewide = core_wide(/*system_wide=*/false,					  /*user_requested_cpus=*/false); 		expr__ctx_clear(ctx);		TEST_ASSERT_VAL("find ids",				expr__find_ids("EVENT1 if #smt_on else EVENT2",					NULL, ctx) == 0);		TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);		TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids,							  smton ? "EVENT1" : "EVENT2",							  &val_ptr)); 		expr__ctx_clear(ctx);		TEST_ASSERT_VAL("find ids",				expr__find_ids("EVENT1 if #core_wide else EVENT2",					NULL, ctx) == 0);		TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);		TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids,							  corewide ? "EVENT1" : "EVENT2",							  &val_ptr)); 	}	/* The expression is a constant 1.0 without needing to evaluate EVENT1. */	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("1.0 if EVENT1 > 100.0 else 1.0",			NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 0); 	/* The expression is a constant 0.0 without needing to evaluate EVENT1. */	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("0 & EVENT1 > 0", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 0);	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("EVENT1 > 0 & 0", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 0);	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("1 & EVENT1 > 0", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT1", &val_ptr));	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("EVENT1 > 0 & 1", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT1", &val_ptr)); 	/* The expression is a constant 1.0 without needing to evaluate EVENT1. */	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("1 | EVENT1 > 0", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 0);	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("EVENT1 > 0 | 1", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 0);	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("0 | EVENT1 > 0", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT1", &val_ptr));	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("find ids",			expr__find_ids("EVENT1 > 0 | 0", NULL, ctx) == 0);	TEST_ASSERT_VAL("find ids", hashmap__size(ctx->ids) == 1);	TEST_ASSERT_VAL("find ids", hashmap__find(ctx->ids, "EVENT1", &val_ptr)); 	/* Test toplogy constants appear well ordered. */	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("#num_cpus_online",			expr__parse(&num_cpus_online, ctx, "#num_cpus_online") == 0);	TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0);	TEST_ASSERT_VAL("#num_cpus >= #num_cpus_online", num_cpus >= num_cpus_online);	TEST_ASSERT_VAL("#num_cores", expr__parse(&num_cores, ctx, "#num_cores") == 0);	TEST_ASSERT_VAL("#num_cpus >= #num_cores", num_cpus >= num_cores);	TEST_ASSERT_VAL("#num_dies", expr__parse(&num_dies, ctx, "#num_dies") == 0);	TEST_ASSERT_VAL("#num_cores >= #num_dies", num_cores >= num_dies);	TEST_ASSERT_VAL("#num_packages", expr__parse(&num_packages, ctx, "#num_packages") == 0); 	if (num_dies) // Some platforms do not have CPU die support, for example s390		TEST_ASSERT_VAL("#num_dies >= #num_packages", num_dies >= num_packages); 	TEST_ASSERT_VAL("#system_tsc_freq", expr__parse(&val, ctx, "#system_tsc_freq") == 0);	if (is_intel)		TEST_ASSERT_VAL("#system_tsc_freq > 0", val > 0);	else		TEST_ASSERT_VAL("#system_tsc_freq == 0", fpclassify(val) == FP_ZERO); 	/*	 * Source count returns the number of events aggregating in a leader	 * event including the leader. Check parsing yields an id.	 */	expr__ctx_clear(ctx);	TEST_ASSERT_VAL("source count",			expr__find_ids("source_count(EVENT1)",			NULL, ctx) == 0);	TEST_ASSERT_VAL("source count", hashmap__size(ctx->ids) == 1);	TEST_ASSERT_VAL("source count", hashmap__find(ctx->ids, "EVENT1", &val_ptr));  	/* Test no cpuid match */	ret = test(ctx, "strcmp_cpuid_str(0x0)", 0); 	/*	 * Test cpuid match with current cpuid. Special chars have to be	 * escaped.	 */	escaped_cpuid1 = strreplace_chars('-', cpuid, "\\-");	free(cpuid);	escaped_cpuid2 = strreplace_chars(',', escaped_cpuid1, "\\,");	free(escaped_cpuid1);	escaped_cpuid1 = strreplace_chars('=', escaped_cpuid2, "\\=");	free(escaped_cpuid2);	scnprintf(strcmp_cpuid_buf, sizeof(strcmp_cpuid_buf),		  "strcmp_cpuid_str(%s)", escaped_cpuid1);	free(escaped_cpuid1);	ret |= test(ctx, strcmp_cpuid_buf, 1); 	/* has_event returns 1 when an event exists. */	expr__add_id_val(ctx, strdup("cycles"), 2);	ret |= test(ctx, "has_event(cycles)", 1); 	expr__ctx_free(ctx); 	return ret;} DEFINE_SUITE("Simple expression parser", expr);