From 3f2c92cd91b1d31e30a1c04c3f4d44ccf85492e8 Mon Sep 17 00:00:00 2001
From: neon443 <69979447+neon443@users.noreply.github.com>
Date: Tue, 24 Jun 2025 09:48:33 +0100
Subject: [PATCH] massively optimised reading from ssh,  reduced cpu usage and
 energy usage

---
 ShhShell.xcodeproj/project.pbxproj            | 6 ++++++
 ShhShell/SSH/SSHHandler.swift                 | 2 +-
 ShhShell/Views/Terminal/SSHTerminalView.swift | 2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/ShhShell.xcodeproj/project.pbxproj b/ShhShell.xcodeproj/project.pbxproj
index 23d6933..6612f2f 100644
--- a/ShhShell.xcodeproj/project.pbxproj
+++ b/ShhShell.xcodeproj/project.pbxproj
@@ -615,6 +615,9 @@
 				MARKETING_VERSION = "$(VERSION)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.neon443.ShhShell;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				REGISTER_APP_GROUPS = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
+				SUPPORTS_MACCATALYST = NO;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_STRICT_CONCURRENCY = complete;
 				SWIFT_VERSION = 5.0;
@@ -648,6 +651,9 @@
 				MARKETING_VERSION = "$(VERSION)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.neon443.ShhShell;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				REGISTER_APP_GROUPS = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
+				SUPPORTS_MACCATALYST = NO;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_STRICT_CONCURRENCY = complete;
 				SWIFT_VERSION = 5.0;
diff --git a/ShhShell/SSH/SSHHandler.swift b/ShhShell/SSH/SSHHandler.swift
index 0c17db3..db39b80 100644
--- a/ShhShell/SSH/SSHHandler.swift
+++ b/ShhShell/SSH/SSHHandler.swift
@@ -342,7 +342,7 @@ class SSHHandler: @unchecked Sendable, ObservableObject {
 		}
 		
 		var buffer: [CChar] = Array(repeating: 0, count: 512)
-		let nbytes = ssh_channel_read(channel, &buffer, UInt32(buffer.count), 0)
+		let nbytes = ssh_channel_read_nonblocking(channel, &buffer, UInt32(buffer.count), 0)
 		
 		guard nbytes > 0 else { return nil }
 		
diff --git a/ShhShell/Views/Terminal/SSHTerminalView.swift b/ShhShell/Views/Terminal/SSHTerminalView.swift
index beaea83..ab3f9a5 100644
--- a/ShhShell/Views/Terminal/SSHTerminalView.swift
+++ b/ShhShell/Views/Terminal/SSHTerminalView.swift
@@ -35,7 +35,7 @@ final class SSHTerminalView: TerminalView, Sendable, @preconcurrency TerminalVie
 						await self.feed(text: read)
 					}
 				} else {
-					usleep(1_000_000)
+					usleep(100_000)
 				}
 //				self?.setNeedsDisplay()
 			}