perf: Avoid boxing in doubleToBigDecimal timestamp serialization (#5551)

* perf: Avoid boxing in doubleToBigDecimal timestamp serialization

Change DateUtils.doubleToBigDecimal to take a primitive double instead of a
boxed Double, and route the four duplicated private copies (ProfileChunk,
ProfileMeasurementValue, SentrySample, SentrySpan) through it. Callers that
hold a primitive double timestamp no longer autobox on every serialization,
and the duplicated helpers are consolidated into one. Behavior is unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* changelog

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: runningcode

CHANGELOG.md

@@ -12,7 +12,7 @@
 
 ### Improvements
 
-- Reduce boxing to improve performance ([#5523](https://github.com/getsentry/sentry-java/pull/5523), [#5527](https://github.com/getsentry/sentry-java/pull/5527))
+- Reduce boxing to improve performance ([#5523](https://github.com/getsentry/sentry-java/pull/5523), [#5527](https://github.com/getsentry/sentry-java/pull/5527), [#5551](https://github.com/getsentry/sentry-java/pull/5551))
 
 ### Dependencies
 

sentry/api/sentry.api

@@ -384,7 +384,7 @@ public final class io/sentry/DataCategory : java/lang/Enum {
 public final class io/sentry/DateUtils {
 	public static fun dateToNanos (Ljava/util/Date;)J
 	public static fun dateToSeconds (Ljava/util/Date;)D
-	public static fun doubleToBigDecimal (Ljava/lang/Double;)Ljava/math/BigDecimal;
+	public static fun doubleToBigDecimal (D)Ljava/math/BigDecimal;
 	public static fun getCurrentDateTime ()Ljava/util/Date;
 	public static fun getDateTime (J)Ljava/util/Date;
 	public static fun getDateTime (Ljava/lang/String;)Ljava/util/Date;

sentry/src/main/java/io/sentry/DateUtils.java

@@ -166,7 +166,7 @@ public static long secondsToNanos(final @NotNull long seconds) {
     return seconds * (1000L * 1000L * 1000L);
   }
 
-  public static @NotNull BigDecimal doubleToBigDecimal(final @NotNull Double value) {
+  public static @NotNull BigDecimal doubleToBigDecimal(final double value) {
     return BigDecimal.valueOf(value).setScale(6, RoundingMode.DOWN);
   }
 }

sentry/src/main/java/io/sentry/ProfileChunk.java

@@ -1,5 +1,7 @@
 package io.sentry;
 
+import static io.sentry.DateUtils.doubleToBigDecimal;
+
 import io.sentry.profilemeasurements.ProfileMeasurement;
 import io.sentry.protocol.DebugMeta;
 import io.sentry.protocol.SdkVersion;
@@ -8,8 +10,6 @@
 import io.sentry.vendor.gson.stream.JsonToken;
 import java.io.File;
 import java.io.IOException;
-import java.math.BigDecimal;
-import java.math.RoundingMode;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
@@ -264,10 +264,6 @@ public void serialize(final @NotNull ObjectWriter writer, final @NotNull ILogger
     writer.endObject();
   }
 
-  private @NotNull BigDecimal doubleToBigDecimal(final @NotNull Double value) {
-    return BigDecimal.valueOf(value).setScale(6, RoundingMode.DOWN);
-  }
-
   @Nullable
   @Override
   public Map<String, Object> getUnknown() {

sentry/src/main/java/io/sentry/profilemeasurements/ProfileMeasurementValue.java

@@ -1,5 +1,7 @@
 package io.sentry.profilemeasurements;
 
+import static io.sentry.DateUtils.doubleToBigDecimal;
+
 import io.sentry.DateUtils;
 import io.sentry.ILogger;
 import io.sentry.JsonDeserializer;
@@ -10,8 +12,6 @@
 import io.sentry.util.Objects;
 import io.sentry.vendor.gson.stream.JsonToken;
 import java.io.IOException;
-import java.math.BigDecimal;
-import java.math.RoundingMode;
 import java.util.Date;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
@@ -92,10 +92,6 @@ public void serialize(final @NotNull ObjectWriter writer, final @NotNull ILogger
     writer.endObject();
   }
 
-  private @NotNull BigDecimal doubleToBigDecimal(final @NotNull Double value) {
-    return BigDecimal.valueOf(value).setScale(6, RoundingMode.DOWN);
-  }
-
   @Nullable
   @Override
   public Map<String, Object> getUnknown() {

sentry/src/main/java/io/sentry/protocol/SentrySpan.java

@@ -1,5 +1,7 @@
 package io.sentry.protocol;
 
+import static io.sentry.DateUtils.doubleToBigDecimal;
+
 import io.sentry.DateUtils;
 import io.sentry.ILogger;
 import io.sentry.JsonDeserializer;
@@ -16,8 +18,6 @@
 import io.sentry.util.Objects;
 import io.sentry.vendor.gson.stream.JsonToken;
 import java.io.IOException;
-import java.math.BigDecimal;
-import java.math.RoundingMode;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.Map;
@@ -230,10 +230,6 @@ public void serialize(final @NotNull ObjectWriter writer, final @NotNull ILogger
     writer.endObject();
   }
 
-  private @NotNull BigDecimal doubleToBigDecimal(final @NotNull Double value) {
-    return BigDecimal.valueOf(value).setScale(6, RoundingMode.DOWN);
-  }
-
   @Nullable
   @Override
   public Map<String, Object> getUnknown() {

sentry/src/main/java/io/sentry/protocol/profiling/SentrySample.java

@@ -1,5 +1,7 @@
 package io.sentry.protocol.profiling;
 
+import static io.sentry.DateUtils.doubleToBigDecimal;
+
 import io.sentry.ILogger;
 import io.sentry.JsonDeserializer;
 import io.sentry.JsonSerializable;
@@ -8,8 +10,6 @@
 import io.sentry.ObjectWriter;
 import io.sentry.vendor.gson.stream.JsonToken;
 import java.io.IOException;
-import java.math.BigDecimal;
-import java.math.RoundingMode;
 import java.util.HashMap;
 import java.util.Map;
 import org.jetbrains.annotations.ApiStatus;
@@ -78,10 +78,6 @@ public void serialize(@NotNull ObjectWriter writer, @NotNull ILogger logger) thr
     writer.endObject();
   }
 
-  private @NotNull BigDecimal doubleToBigDecimal(final @NotNull Double value) {
-    return BigDecimal.valueOf(value).setScale(6, RoundingMode.DOWN);
-  }
-
   @Nullable
   @Override
   public Map<String, Object> getUnknown() {