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-rw-r--r--base/field_trial.cc5
-rw-r--r--base/field_trial.h6
-rw-r--r--base/field_trial_unittest.cc49
-rw-r--r--chrome/browser/browser_main.cc26
-rw-r--r--chrome/browser/io_thread.cc4
-rw-r--r--chrome/browser/net/predictor_api.cc18
-rw-r--r--chrome/browser/net/websocket_experiment/websocket_experiment_runner.cc2
7 files changed, 60 insertions, 50 deletions
diff --git a/base/field_trial.cc b/base/field_trial.cc
index 137c8c3..84e96a6 100644
--- a/base/field_trial.cc
+++ b/base/field_trial.cc
@@ -19,6 +19,8 @@ const int FieldTrial::kAllRemainingProbability = -2;
// static
const char FieldTrialList::kPersistentStringSeparator('/');
+static const char kHistogramFieldTrialSeparator('_');
+
//------------------------------------------------------------------------------
// FieldTrial methods and members.
@@ -47,7 +49,7 @@ int FieldTrial::AppendGroup(const std::string& name,
// This is the group that crossed the random line, so we do the assignment.
group_ = next_group_number_;
if (name.empty())
- StringAppendF(&group_name_, "_%d", group_);
+ StringAppendF(&group_name_, "%d", group_);
else
group_name_ = name;
}
@@ -58,6 +60,7 @@ int FieldTrial::AppendGroup(const std::string& name,
std::string FieldTrial::MakeName(const std::string& name_prefix,
const std::string& trial_name) {
std::string big_string(name_prefix);
+ big_string.append(1, kHistogramFieldTrialSeparator);
return big_string.append(FieldTrialList::FindFullName(trial_name));
}
diff --git a/base/field_trial.h b/base/field_trial.h
index 9dba639..b1f0a07 100644
--- a/base/field_trial.h
+++ b/base/field_trial.h
@@ -34,8 +34,8 @@
// // process teardown, courtesy of their automatic registration in
// // FieldTrialList.
// scoped_refptr<FieldTrial> trial = new FieldTrial("MemoryExperiment", 1000);
-// int group1 = trial->AppendGroup("_high_mem", 20); // 2% in _high_mem group.
-// int group2 = trial->AppendGroup("_low_mem", 20); // 2% in _low_mem group.
+// int group1 = trial->AppendGroup("high_mem", 20); // 2% in high_mem group.
+// int group2 = trial->AppendGroup("low_mem", 20); // 2% in low_mem group.
// // Take action depending of which group we randomly land in.
// if (trial->group() == group1)
// SetPruningAlgorithm(kType1); // Sample setting of browser state.
@@ -125,7 +125,7 @@ class FieldTrial : public base::RefCounted<FieldTrial> {
// This is empty of the trial is not in the experiment.
const std::string name_;
- // The maximu sum of all probabilities supplied, which corresponds to 100%.
+ // The maximum sum of all probabilities supplied, which corresponds to 100%.
// This is the scaling factor used to adjust supplied probabilities.
Probability divisor_;
diff --git a/base/field_trial_unittest.cc b/base/field_trial_unittest.cc
index 671376d..7d2ea18 100644
--- a/base/field_trial_unittest.cc
+++ b/base/field_trial_unittest.cc
@@ -26,9 +26,9 @@ TEST_F(FieldTrialTest, Registration) {
EXPECT_FALSE(FieldTrialList::Find(name2));
FieldTrial* trial1 = new FieldTrial(name1, 10);
- EXPECT_EQ(trial1->group(), FieldTrial::kNotParticipating);
- EXPECT_EQ(trial1->name(), name1);
- EXPECT_EQ(trial1->group_name(), "");
+ EXPECT_EQ(FieldTrial::kNotParticipating, trial1->group());
+ EXPECT_EQ(name1, trial1->name());
+ EXPECT_EQ("", trial1->group_name());
trial1->AppendGroup("", 7);
@@ -36,9 +36,9 @@ TEST_F(FieldTrialTest, Registration) {
EXPECT_FALSE(FieldTrialList::Find(name2));
FieldTrial* trial2 = new FieldTrial(name2, 10);
- EXPECT_EQ(trial2->group(), FieldTrial::kNotParticipating);
- EXPECT_EQ(trial2->name(), name2);
- EXPECT_EQ(trial2->group_name(), "");
+ EXPECT_EQ(FieldTrial::kNotParticipating, trial2->group());
+ EXPECT_EQ(name2, trial2->name());
+ EXPECT_EQ("", trial2->group_name());
trial2->AppendGroup("a first group", 7);
@@ -56,16 +56,16 @@ TEST_F(FieldTrialTest, AbsoluteProbabilities) {
always_false[0] = i;
FieldTrial* trial_true = new FieldTrial(always_true, 10);
- const std::string winner = "_TheWinner";
+ const std::string winner = "TheWinner";
int winner_group = trial_true->AppendGroup(winner, 10);
- EXPECT_EQ(trial_true->group(), winner_group);
- EXPECT_EQ(trial_true->group_name(), winner);
+ EXPECT_EQ(winner_group, trial_true->group());
+ EXPECT_EQ(winner, trial_true->group_name());
FieldTrial* trial_false = new FieldTrial(always_false, 10);
int loser_group = trial_false->AppendGroup("ALoser", 0);
- EXPECT_NE(trial_false->group(), loser_group);
+ EXPECT_NE(loser_group, trial_false->group());
}
}
@@ -123,15 +123,15 @@ TEST_F(FieldTrialTest, OneWinner) {
int might_win = trial->AppendGroup("", 1);
if (trial->group() == might_win) {
- EXPECT_EQ(winner_index, -2);
+ EXPECT_EQ(-2, winner_index);
winner_index = might_win;
- StringAppendF(&winner_name, "_%d", might_win);
+ StringAppendF(&winner_name, "%d", might_win);
EXPECT_EQ(winner_name, trial->group_name());
}
}
EXPECT_GE(winner_index, 0);
EXPECT_EQ(trial->group(), winner_index);
- EXPECT_EQ(winner_name, trial->group_name());
+ EXPECT_EQ(trial->group_name(), winner_name);
}
TEST_F(FieldTrialTest, Save) {
@@ -139,15 +139,15 @@ TEST_F(FieldTrialTest, Save) {
FieldTrial* trial = new FieldTrial("Some name", 10);
// There is no winner yet, so no textual group name is associated with trial.
- EXPECT_EQ(trial->group_name(), "");
+ EXPECT_EQ("", trial->group_name());
FieldTrialList::StatesToString(&save_string);
- EXPECT_EQ(save_string, "");
+ EXPECT_EQ("", save_string);
save_string.clear();
// Create a winning group.
trial->AppendGroup("Winner", 10);
FieldTrialList::StatesToString(&save_string);
- EXPECT_EQ(save_string, "Some name/Winner/");
+ EXPECT_EQ("Some name/Winner/", save_string);
save_string.clear();
// Create a second trial and winning group.
@@ -156,7 +156,7 @@ TEST_F(FieldTrialTest, Save) {
FieldTrialList::StatesToString(&save_string);
// We assume names are alphabetized... though this is not critical.
- EXPECT_EQ(save_string, "Some name/Winner/xxx/yyyy/");
+ EXPECT_EQ("Some name/Winner/xxx/yyyy/", save_string);
}
TEST_F(FieldTrialTest, Restore) {
@@ -167,13 +167,13 @@ TEST_F(FieldTrialTest, Restore) {
FieldTrial* trial = FieldTrialList::Find("Some_name");
ASSERT_NE(static_cast<FieldTrial*>(NULL), trial);
- EXPECT_EQ(trial->group_name(), "Winner");
- EXPECT_EQ(trial->name(), "Some_name");
+ EXPECT_EQ("Winner", trial->group_name());
+ EXPECT_EQ("Some_name", trial->name());
trial = FieldTrialList::Find("xxx");
ASSERT_NE(static_cast<FieldTrial*>(NULL), trial);
- EXPECT_EQ(trial->group_name(), "yyyy");
- EXPECT_EQ(trial->name(), "xxx");
+ EXPECT_EQ("yyyy", trial->group_name());
+ EXPECT_EQ("xxx", trial->name());
}
TEST_F(FieldTrialTest, BogusRestore) {
@@ -196,3 +196,10 @@ TEST_F(FieldTrialTest, DuplicateRestore) {
// But it is an error to try to change to a different winner.
EXPECT_FALSE(FieldTrialList::StringAugmentsState("Some name/Loser/"));
}
+
+TEST_F(FieldTrialTest, MakeName) {
+ FieldTrial* trial = new FieldTrial("Field Trial", 10);
+ trial->AppendGroup("Winner", 10);
+ EXPECT_EQ("Histogram_Winner",
+ FieldTrial::MakeName("Histogram", "Field Trial"));
+}
diff --git a/chrome/browser/browser_main.cc b/chrome/browser/browser_main.cc
index f9d9398c..1f95c1f5 100644
--- a/chrome/browser/browser_main.cc
+++ b/chrome/browser/browser_main.cc
@@ -187,19 +187,19 @@ void BrowserMainParts::ConnectionFieldTrial() {
scoped_refptr<FieldTrial> connect_trial =
new FieldTrial("ConnCountImpact", kConnectDivisor);
- const int connect_5 = connect_trial->AppendGroup("_conn_count_5",
+ const int connect_5 = connect_trial->AppendGroup("conn_count_5",
kConnectProbability);
- const int connect_7 = connect_trial->AppendGroup("_conn_count_7",
+ const int connect_7 = connect_trial->AppendGroup("conn_count_7",
kConnectProbability);
- const int connect_8 = connect_trial->AppendGroup("_conn_count_8",
+ const int connect_8 = connect_trial->AppendGroup("conn_count_8",
kConnectProbability);
- const int connect_9 = connect_trial->AppendGroup("_conn_count_9",
+ const int connect_9 = connect_trial->AppendGroup("conn_count_9",
kConnectProbability);
// This (6) is the current default value. Having this group declared here
// makes it straightforward to modify |kConnectProbability| such that the same
// probability value will be assigned to all the other groups, while
// preserving the remainder of the of probability space to the default value.
- const int connect_6 = connect_trial->AppendGroup("_conn_count_6",
+ const int connect_6 = connect_trial->AppendGroup("conn_count_6",
FieldTrial::kAllRemainingProbability);
const int connect_trial_group = connect_trial->group();
@@ -233,13 +233,13 @@ void BrowserMainParts::SocketTimeoutFieldTrial() {
new FieldTrial("IdleSktToImpact", kIdleSocketTimeoutDivisor);
const int socket_timeout_5 =
- socket_timeout_trial->AppendGroup("_idle_timeout_5",
+ socket_timeout_trial->AppendGroup("idle_timeout_5",
kSocketTimeoutProbability);
const int socket_timeout_20 =
- socket_timeout_trial->AppendGroup("_idle_timeout_20",
+ socket_timeout_trial->AppendGroup("idle_timeout_20",
kSocketTimeoutProbability);
const int socket_timeout_60 =
- socket_timeout_trial->AppendGroup("_idle_timeout_60",
+ socket_timeout_trial->AppendGroup("idle_timeout_60",
kSocketTimeoutProbability);
// This (10 seconds) is the current default value. Declaring it at the end
// allows for assigning the remainder of the probability space to it; which
@@ -247,7 +247,7 @@ void BrowserMainParts::SocketTimeoutFieldTrial() {
// down the road if we see the need to, while the remaining groups are
// are assigned an equal share of the probability space.
const int socket_timeout_10 =
- socket_timeout_trial->AppendGroup("_idle_timeout_10",
+ socket_timeout_trial->AppendGroup("idle_timeout_10",
FieldTrial::kAllRemainingProbability);
const int idle_to_trial_group = socket_timeout_trial->group();
@@ -336,10 +336,10 @@ void BrowserMainParts::SpdyFieldTrial() {
new FieldTrial("SpdyImpact", kSpdyDivisor);
// npn with only http support, no spdy.
int npn_http_grp =
- trial->AppendGroup("_npn_with_http", npnhttp_probability);
+ trial->AppendGroup("npn_with_http", npnhttp_probability);
// npn with spdy support.
int npn_spdy_grp =
- trial->AppendGroup("_npn_with_spdy", npnspdy_probability);
+ trial->AppendGroup("npn_with_spdy", npnspdy_probability);
int trial_grp = trial->group();
if (trial_grp == npn_http_grp) {
is_spdy_trial = true;
@@ -1262,9 +1262,9 @@ int BrowserMain(const MainFunctionParams& parameters) {
sdch_supported_domain =
parsed_command_line.GetSwitchValueASCII(switches::kSdchFilter);
} else {
- sdch_trial->AppendGroup("_global_disable_sdch",
+ sdch_trial->AppendGroup("global_disable_sdch",
kSDCH_DISABLE_PROBABILITY);
- int sdch_enabled = sdch_trial->AppendGroup("_global_enable_sdch",
+ int sdch_enabled = sdch_trial->AppendGroup("global_enable_sdch",
FieldTrial::kAllRemainingProbability);
if (sdch_enabled != sdch_trial->group())
sdch_supported_domain = "never_enabled_sdch_for_any_domain";
diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc
index a39b35b..3d1adb3 100644
--- a/chrome/browser/io_thread.cc
+++ b/chrome/browser/io_thread.cc
@@ -69,9 +69,9 @@ net::HostResolver* CreateGlobalHostResolver() {
const FieldTrial::Probability kDivisor = 100;
const FieldTrial::Probability kProbability = 50; // 50% probability.
FieldTrial* trial = new FieldTrial("IPv6_Probe", kDivisor);
- int skip_group = trial->AppendGroup("_IPv6_probe_skipped",
+ int skip_group = trial->AppendGroup("IPv6_probe_skipped",
kProbability);
- trial->AppendGroup("_IPv6_probe_done",
+ trial->AppendGroup("IPv6_probe_done",
FieldTrial::kAllRemainingProbability);
use_ipv6_probe = (trial->group() != skip_group);
#endif
diff --git a/chrome/browser/net/predictor_api.cc b/chrome/browser/net/predictor_api.cc
index 98febfe..28e89f2 100644
--- a/chrome/browser/net/predictor_api.cc
+++ b/chrome/browser/net/predictor_api.cc
@@ -603,7 +603,7 @@ PredictorInit::PredictorInit(PrefService* user_prefs,
trial_ = new FieldTrial("DnsImpact", kDivisor);
// First option is to disable prefetching completely.
- int disabled_prefetch = trial_->AppendGroup("_disabled_prefetch",
+ int disabled_prefetch = trial_->AppendGroup("disabled_prefetch",
kProbabilityPerGroup);
@@ -615,27 +615,27 @@ PredictorInit::PredictorInit(PrefService* user_prefs,
// Experiment 1:
// Set congestion detection at 250, 500, or 750ms, rather than the 1 second
// default.
- int max_250ms_prefetch = trial_->AppendGroup("_max_250ms_queue_prefetch",
+ int max_250ms_prefetch = trial_->AppendGroup("max_250ms_queue_prefetch",
kProbabilityPerGroup);
- int max_500ms_prefetch = trial_->AppendGroup("_max_500ms_queue_prefetch",
+ int max_500ms_prefetch = trial_->AppendGroup("max_500ms_queue_prefetch",
kProbabilityPerGroup);
- int max_750ms_prefetch = trial_->AppendGroup("_max_750ms_queue_prefetch",
+ int max_750ms_prefetch = trial_->AppendGroup("max_750ms_queue_prefetch",
kProbabilityPerGroup);
// Set congestion detection at 2 seconds instead of the 1 second default.
- int max_2s_prefetch = trial_->AppendGroup("_max_2s_queue_prefetch",
+ int max_2s_prefetch = trial_->AppendGroup("max_2s_queue_prefetch",
kProbabilityPerGroup);
// Experiment 2:
// Set max simultaneous resoultions to 2, 4, or 6, and scale the congestion
// limit proportionally (so we don't impact average probability of asserting
// congesion very much).
int max_2_concurrent_prefetch = trial_->AppendGroup(
- "_max_2 concurrent_prefetch", kProbabilityPerGroup);
+ "max_2 concurrent_prefetch", kProbabilityPerGroup);
int max_4_concurrent_prefetch = trial_->AppendGroup(
- "_max_4 concurrent_prefetch", kProbabilityPerGroup);
+ "max_4 concurrent_prefetch", kProbabilityPerGroup);
int max_6_concurrent_prefetch = trial_->AppendGroup(
- "_max_6 concurrent_prefetch", kProbabilityPerGroup);
+ "max_6 concurrent_prefetch", kProbabilityPerGroup);
- trial_->AppendGroup("_default_enabled_prefetch",
+ trial_->AppendGroup("default_enabled_prefetch",
FieldTrial::kAllRemainingProbability);
// We will register the incognito observer regardless of whether prefetching
diff --git a/chrome/browser/net/websocket_experiment/websocket_experiment_runner.cc b/chrome/browser/net/websocket_experiment/websocket_experiment_runner.cc
index 9b56611..d7effc9 100644
--- a/chrome/browser/net/websocket_experiment/websocket_experiment_runner.cc
+++ b/chrome/browser/net/websocket_experiment/websocket_experiment_runner.cc
@@ -28,7 +28,7 @@ void WebSocketExperimentRunner::Start() {
DCHECK(!runner.get());
scoped_refptr<FieldTrial> trial = new FieldTrial("WebSocketExperiment", 1000);
- trial->AppendGroup("_active", 5); // 0.5% in _active group.
+ trial->AppendGroup("active", 5); // 0.5% in active group.
bool run_experiment = (trial->group() != FieldTrial::kNotParticipating);
#ifndef NDEBUG
generated by cgit v1.1 at 2025-11-28 09:25:07 +0000