From be691582ee12613278af24cb5a824eeb357f6324 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Mon, 29 Jul 2024 11:27:22 -0400
Subject: some work on compositor

---
 kernel/include/hilbert/kernel/application.hpp |  9 ++++++++-
 kernel/include/hilbert/kernel/serial.hpp      |  6 ++++++
 kernel/include/hilbert/kernel/utility.hpp     | 15 +++++++++++++--
 3 files changed, 27 insertions(+), 3 deletions(-)

(limited to 'kernel/include/hilbert')

diff --git a/kernel/include/hilbert/kernel/application.hpp b/kernel/include/hilbert/kernel/application.hpp
index a4b59ff..e7c7d2e 100644
--- a/kernel/include/hilbert/kernel/application.hpp
+++ b/kernel/include/hilbert/kernel/application.hpp
@@ -112,6 +112,8 @@ namespace hilbert::kernel::application {
     utility::list<string_pair> environment_variables;
 
   public:
+    utility::string name;
+
     app_memory *memory;
 
     //set in get_framebuffer syscall
@@ -121,13 +123,16 @@ namespace hilbert::kernel::application {
     uint64_t id;
 
     //this class takes ownership of memory
-    process(app_memory *memory);
+    process(app_memory *memory, const utility::string &name);
     ~process();
 
     //arguments are utility::move'd
     void add_environment_variable(
       utility::string &&name, utility::string &&value);
 
+    //null if unset
+    utility::string *get_environment_variable(const utility::string &name);
+
     void add_thread(thread *t);
     void notify_thread_ended(thread *t, int exit_code);
     void on_end_process(int exit_code);
@@ -180,6 +185,8 @@ namespace hilbert::kernel::application {
     utility::maybe<unsigned> new_socket_stream_id;
 
   public:
+    utility::string name;
+
     process *owner;
 
     //the cpu state is saved here when the thread is not running.
diff --git a/kernel/include/hilbert/kernel/serial.hpp b/kernel/include/hilbert/kernel/serial.hpp
index e7a44f2..7751fa0 100644
--- a/kernel/include/hilbert/kernel/serial.hpp
+++ b/kernel/include/hilbert/kernel/serial.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <hilbert/kernel/utility.hpp>
 #include <stdint.h>
 
 namespace hilbert::kernel {
@@ -15,6 +16,11 @@ namespace hilbert::kernel {
     }
   }
 
+  static inline void serial_putstr(const utility::string &str) {
+    for (unsigned i = 0; i < str.count; ++i)
+      serial_putchar(str.buffer[i]);
+  }
+
   template <int digits, int dot_every = 4>
   static inline void serial_puthex(uint64_t n) {
     for (int d = digits - 1; d >= 0; --d) {
diff --git a/kernel/include/hilbert/kernel/utility.hpp b/kernel/include/hilbert/kernel/utility.hpp
index b7f1a1b..a21d3fe 100644
--- a/kernel/include/hilbert/kernel/utility.hpp
+++ b/kernel/include/hilbert/kernel/utility.hpp
@@ -107,6 +107,10 @@ namespace hilbert::kernel::utility {
       n->value = value;
       n->next = 0;
       n->prev = last;
+      if (last)
+        last->next = n;
+      else
+        first = n;
       last = n;
     }
 
@@ -115,12 +119,19 @@ namespace hilbert::kernel::utility {
       n->value = value;
       n->next = 0;
       n->prev = last;
+      if (last)
+        last->next = n;
+      else
+        first = n;
       last = n;
     }
 
     void clear() {
-      for (node *n = first; n; n = n->next)
-        delete n;
+      if (first) {
+        for (node *n = first->next; n; n = n->next)
+          delete n->prev;
+        delete last;
+      }
       first = 0;
       last = 0;
     }
-- 
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