Merge pull request #752 from jberkenbilt/report-mem-usage

Report mem usage

3 files changed, 13 insertions, 1 deletions

diff --git a/include/qpdf/QPDFJob.hh b/include/qpdf/QPDFJob.hh
index 0e4d8a2e..2d4ab0d2 100644
--- a/include/qpdf/QPDFJob.hh
+++ b/include/qpdf/QPDFJob.hh
@@ -711,6 +711,7 @@ class QPDFJob
         bool json_input;
         bool json_output;
         std::string update_from_json;
+        bool report_mem_usage;
     };
     std::shared_ptr<Members> m;
 };
diff --git a/include/qpdf/QUtil.hh b/include/qpdf/QUtil.hh
index 41b89da4..96f4f7ed 100644
--- a/include/qpdf/QUtil.hh
+++ b/include/qpdf/QUtil.hh
@@ -525,7 +525,17 @@ namespace QUtil
         wchar_t const* const argv[],
         std::function<int(int, char const* const[])> realmain);
 #endif // QPDF_NO_WCHAR_T
-};     // namespace QUtil
+
+    // Try to return the maximum amount of memory allocated by the
+    // current process and its threads. Return 0 if unable to
+    // determine. This is Linux-specific and not implemented to be
+    // completely reliable. It is used during development for
+    // performance testing to detect changes that may significantly
+    // change memory usage. It is not recommended for use for other
+    // purposes.
+    QPDF_DLL
+    size_t get_max_memory_usage();
+}; // namespace QUtil
 
 inline bool
 QUtil::is_hex_digit(char ch)
diff --git a/include/qpdf/auto_job_c_main.hh b/include/qpdf/auto_job_c_main.hh
index 90927ded..cc655c23 100644
--- a/include/qpdf/auto_job_c_main.hh
+++ b/include/qpdf/auto_job_c_main.hh
@@ -33,6 +33,7 @@ QPDF_DLL Config* qdf();
 QPDF_DLL Config* rawStreamData();
 QPDF_DLL Config* recompressFlate();
 QPDF_DLL Config* removePageLabels();
+QPDF_DLL Config* reportMemUsage();
 QPDF_DLL Config* requiresPassword();
 QPDF_DLL Config* showEncryption();
 QPDF_DLL Config* showEncryptionKey();