From db8e08f5bc2cda6260d3b6e89a75d0cf85e2514b Mon Sep 17 00:00:00 2001
From: Matthew Carbone <x94carbone@gmail.com>
Date: Mon, 25 Dec 2023 23:03:28 -0500
Subject: [PATCH] Add hdspin-postprocess executable

---
 CMakeLists.txt           | 17 +++++++++++++++++
 src/main.cpp             |  2 --
 src/main_postprocess.cpp | 10 ++++++++++
 src/utils.cpp            |  6 ++++--
 4 files changed, 31 insertions(+), 4 deletions(-)
 create mode 100644 src/main_postprocess.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9b0822f..9e602ca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,6 +39,9 @@ if (${BUILD_TESTS})
 
 endif()
 
+
+# Build the core package
+
 find_package(MPI REQUIRED)
 
 if(MPI_FOUND)
@@ -83,3 +86,17 @@ else()
 endif()
 
 target_link_libraries(hdspin ${MPI_CXX_LIBRARIES})
+
+
+# Build the postprocessing executable
+# Useful for if the main job doesn't actually finish, but we want to just
+# process what we have
+
+add_executable(
+    hdspin-postprocess
+    src/main_postprocess.cpp
+    src/utils.cpp
+    src/processing_utils.cpp
+)
+
+target_link_libraries(hdspin-postprocess ${MPI_CXX_LIBRARIES})
diff --git a/src/main.cpp b/src/main.cpp
index 0583131..d9f2992 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -73,8 +73,6 @@ int main(int argc, char *argv[])
             "is faster, and selects that one."
         )->check(CLI::IsMember({"standard", "gillespie", "auto"}));
 
-        // YOU LEFT OFF HERE!!!!
-        // Need to change this definition in the utils files
         app.add_option(
             "-n, --n_tracers", p.n_tracers,
             "The number of simulations to run in total, defaults to 100."
diff --git a/src/main_postprocess.cpp b/src/main_postprocess.cpp
new file mode 100644
index 0000000..313a845
--- /dev/null
+++ b/src/main_postprocess.cpp
@@ -0,0 +1,10 @@
+#include <mpi.h>
+#include "processing_utils.h"
+
+
+int main(int argc, char *argv[])
+{
+    MPI_Init(&argc, &argv);
+    processing_utils::postprocess();
+    MPI_Finalize();
+}
diff --git a/src/utils.cpp b/src/utils.cpp
index 79a9e5f..e4c1c23 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -251,10 +251,12 @@ void make_directories()
     system(command.c_str());
 }
 
+
+// Does nothing for now
 void cleanup_directories()
 {
-    std::string command = "rm -r " + std::string(GRID_PATH);
-    system(command.c_str());
+    // std::string command = "rm -r " + std::string(GRID_PATH);
+    // system(command.c_str());
 }
 
 void make_energy_grid_logspace(const size_t log10_timesteps, const size_t n_gridpoints)