Mono does not emit ProcessExit event on SIGTERM. #81093

Closed
#100056
Closed
Mono does not emit ProcessExit event on SIGTERM.#81093
#100056
Labels
area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
Milestone
9.0.0

Description

@tmds
tmds
opened on Jan 24, 2023

To reproduce:

dotnet new web -o web
cd web
dotnet run

Find the pid of the dotnet run process, and send it SIGTERM from another terminal:

kill -SIGTERM <pid>

With CoreCLR, the application shuts down, and the exit code is 0:

...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

With Mono, the application keeps running, the dotnet run process gets terminated:

Terminated
$ echo $?
143

The web process is still running, you can send it SIGTERM seperately and it terminates nicely.

info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.

cc @akoeplinger

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      Mono does not emit ProcessExit event on SIGTERM. #81093
      Closed
      #100056
      Closed
      Mono does not emit ProcessExit event on SIGTERM.#81093
      #100056
      Labels
      area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
      Milestone
      9.0.0
      Description
      @tmds
      tmds
      opened on Jan 24, 2023
      To reproduce:
      dotnet new web -o web
cd web
dotnet run

      Find the pid of the dotnet run process, and send it SIGTERM from another terminal:
      kill -SIGTERM <pid>

      With CoreCLR, the application shuts down, and the exit code is 0:
      ...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

      With Mono, the application keeps running, the dotnet run process gets terminated:
      Terminated
$ echo $?
143

      The web process is still running, you can send it SIGTERM seperately and it terminates nicely.
      info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

      This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.
      cc @akoeplinger
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Mono does not emit ProcessExit event on SIGTERM. #81093
          Closed
          #100056
          Closed
          Mono does not emit ProcessExit event on SIGTERM.#81093
          #100056
          Labels
          area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
          Milestone
          9.0.0
          Description
          @tmds
          tmds
          opened on Jan 24, 2023
          To reproduce:
          dotnet new web -o web
cd web
dotnet run

          Find the pid of the dotnet run process, and send it SIGTERM from another terminal:
          kill -SIGTERM <pid>

          With CoreCLR, the application shuts down, and the exit code is 0:
          ...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

          With Mono, the application keeps running, the dotnet run process gets terminated:
          Terminated
$ echo $?
143

          The web process is still running, you can send it SIGTERM seperately and it terminates nicely.
          info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

          This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.
          cc @akoeplinger
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
            Type
            No type
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            No projects
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              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Mono does not emit ProcessExit event on SIGTERM. #81093
              Closed
              #100056
              Closed
              Mono does not emit ProcessExit event on SIGTERM.#81093
              #100056
              Labels
              area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
              Milestone
              9.0.0
              Description
              @tmds
              tmds
              opened on Jan 24, 2023
              To reproduce:
              dotnet new web -o web
cd web
dotnet run

              Find the pid of the dotnet run process, and send it SIGTERM from another terminal:
              kill -SIGTERM <pid>

              With CoreCLR, the application shuts down, and the exit code is 0:
              ...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

              With Mono, the application keeps running, the dotnet run process gets terminated:
              Terminated
$ echo $?
143

              The web process is still running, you can send it SIGTERM seperately and it terminates nicely.
              info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

              This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.
              cc @akoeplinger
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                Type
                No type
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                No projects
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                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Mono does not emit ProcessExit event on SIGTERM. #81093
                  Closed
                  #100056
                  Closed
                  Mono does not emit ProcessExit event on SIGTERM.#81093
                  #100056
                  Labels
                  area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                  Milestone
                  9.0.0
                  Description
                  @tmds
                  tmds
                  opened on Jan 24, 2023
                  To reproduce:
                  dotnet new web -o web
cd web
dotnet run

                  Find the pid of the dotnet run process, and send it SIGTERM from another terminal:
                  kill -SIGTERM <pid>

                  With CoreCLR, the application shuts down, and the exit code is 0:
                  ...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

                  With Mono, the application keeps running, the dotnet run process gets terminated:
                  Terminated
$ echo $?
143

                  The web process is still running, you can send it SIGTERM seperately and it terminates nicely.
                  info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

                  This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.
                  cc @akoeplinger
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Mono does not emit ProcessExit event on SIGTERM. #81093
                      Closed
                      #100056
                      Closed
                      Mono does not emit ProcessExit event on SIGTERM.#81093
                      #100056
                      Labels
                      area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                      Milestone
                      9.0.0
                      Description
                      @tmds
                      tmds
                      opened on Jan 24, 2023
                      To reproduce:
                      dotnet new web -o web
cd web
dotnet run

                      Find the pid of the dotnet run process, and send it SIGTERM from another terminal:
                      kill -SIGTERM <pid>

                      With CoreCLR, the application shuts down, and the exit code is 0:
                      ...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

                      With Mono, the application keeps running, the dotnet run process gets terminated:
                      Terminated
$ echo $?
143

                      The web process is still running, you can send it SIGTERM seperately and it terminates nicely.
                      info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

                      This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.
                      cc @akoeplinger
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Mono does not emit ProcessExit event on SIGTERM. #81093
                          Closed
                          #100056
                          Closed
                          Mono does not emit ProcessExit event on SIGTERM.#81093
                          #100056
                          Labels
                          area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                          Milestone
                          9.0.0
                          Description
                          @tmds
                          tmds
                          opened on Jan 24, 2023
                          To reproduce:
                          dotnet new web -o web
cd web
dotnet run

                          Find the pid of the dotnet run process, and send it SIGTERM from another terminal:
                          kill -SIGTERM <pid>

                          With CoreCLR, the application shuts down, and the exit code is 0:
                          ...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

                          With Mono, the application keeps running, the dotnet run process gets terminated:
                          Terminated
$ echo $?
143

                          The web process is still running, you can send it SIGTERM seperately and it terminates nicely.
                          info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

                          This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.
                          cc @akoeplinger
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              Mono does not emit ProcessExit event on SIGTERM. #81093
                              Closed
                              #100056
                              Closed
                              Mono does not emit ProcessExit event on SIGTERM.#81093
                              #100056
                              Labels
                              area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                              Milestone
                              9.0.0
                              Description
                              @tmds
                              tmds
                              opened on Jan 24, 2023
                              To reproduce:
                              dotnet new web -o web
cd web
dotnet run

                              Find the pid of the dotnet run process, and send it SIGTERM from another terminal:
                              kill -SIGTERM <pid>

                              With CoreCLR, the application shuts down, and the exit code is 0:
                              ...
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
$ echo $?
0

                              With Mono, the application keeps running, the dotnet run process gets terminated:
                              Terminated
$ echo $?
143

                              The web process is still running, you can send it SIGTERM seperately and it terminates nicely.
                              info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...

                              This difference in behavior is causing one of the source-build smoke tests to fail: dotnet/source-build#3174.
                              cc @akoeplinger
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                area-VM-meta-monoin-prThere is an active PR which will close this issue when it is merged
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions