Shared CPDF_Parser + per-layer overlay holder

.github/workflows/pdfium-tsan-thread-soak.yml

@@ -0,0 +1,79 @@
+name: PDFium TSAN Thread Soak
+
+on:
+  workflow_dispatch:
+    inputs:
+      ref:
+        description: Git ref to test
+        required: false
+        default: embedpdf/main
+      pdf_path:
+        description: PDF fixture to render during the soak
+        required: false
+        default: testing/resources/hello_world.pdf
+      threads:
+        description: Number of worker threads
+        required: false
+        default: '2'
+      iterations:
+        description: Iterations per worker thread
+        required: false
+        default: '2'
+
+permissions:
+  contents: read
+
+jobs:
+  tsan-thread-soak:
+    name: Linux x64 TSAN thread soak
+    runs-on: ubuntu-24.04
+    timeout-minutes: 90
+    env:
+      PDF_RUNTIME_SYNC: auto
+      PDF_RUNTIME_TARGET_OS_LIST: linux
+      EMBEDPDF_TLS_GLOBALS: true
+      EMBEDPDF_TSAN: 1
+      PDF_PATH: ${{ inputs.pdf_path }}
+      SOAK_THREADS: ${{ inputs.threads }}
+      SOAK_ITERATIONS: ${{ inputs.iterations }}
+      SOAK_OUT: out/embedpdf-runtime-thread-soak-linux-x64
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ inputs.ref || github.ref_name }}
+
+      - name: Install depot_tools
+        shell: bash
+        run: |
+          git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git "$RUNNER_TEMP/depot_tools"
+          echo "$RUNNER_TEMP/depot_tools" >> "$GITHUB_PATH"
+
+      - name: Install Linux base deps
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends cmake clang lld curl g++ ninja-build pkg-config tar
+
+      - name: Run TSAN thread soak
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p "$SOAK_OUT"
+          scripts/embedpdf-runtime/thread-soak-target.sh \
+            linux-x64 \
+            "$PDF_PATH" \
+            -- \
+            --threads="$SOAK_THREADS" \
+            --iterations="$SOAK_ITERATIONS" \
+            2>&1 | tee "$SOAK_OUT/thread-soak.log"
+
+      - name: Upload TSAN logs
+        if: always()
+        uses: actions/upload-artifact@v6
+        with:
+          name: pdfium-tsan-thread-soak-logs
+          path: |
+            out/embedpdf-runtime-thread-soak-linux-x64/thread-soak.log
+            out/embedpdf-runtime-thread-soak-linux-x64/args.gn
+          if-no-files-found: ignore

BUILD.gn

@@ -51,6 +51,13 @@ config("pdfium_common_config") {
     defines += [ "PDF_USE_PARTITION_ALLOC" ]
   }
 
+  # EmbedPDF: thread-confined runtime. Translates the embedpdf_thread_local_globals
+  # GN arg into the EPDF_THREAD_LOCAL_GLOBALS define consumed by EPDF_TLS
+  # (core/fxcrt/epdf_tls.h). Default off; see pdfium.gni.
+  if (embedpdf_thread_local_globals) {
+    defines += [ "EPDF_THREAD_LOCAL_GLOBALS" ]
+  }
+
   if (is_win) {
     # Assume UTF-8 by default to avoid code page dependencies.
     cflags += [ "/utf-8" ]
@@ -191,6 +198,7 @@ source_set("pdfium_public_headers_impl") {
   sources = [
     "public/cpp/fpdf_deleters.h",
     "public/cpp/fpdf_scopers.h",
+    "public/epdf_redact.h",
     "public/fpdf_annot.h",
     "public/fpdf_attachment.h",
     "public/fpdf_catalog.h",
@@ -431,6 +439,9 @@ group("pdfium_all") {
     ":pdfium_unittests",
     "testing:pdfium_test",
     "testing/fuzzers",
+    "testing/tools:epdf_layer_memory_benchmark",
+    "testing/tools:epdf_layer_replay_soak",
+    "testing/tools:epdf_thread_soak",
   ]
 
   if (pdf_is_standalone) {

core/fpdfapi/edit/BUILD.gn

@@ -53,6 +53,7 @@ source_set("contentstream_write_utils") {
 
 pdfium_unittest_source_set("unittests") {
   sources = [
+    "cpdf_creator_unittest.cpp",
     "cpdf_npagetooneexporter_unittest.cpp",
     "cpdf_pagecontentgenerator_unittest.cpp",
   ]